# problem flashing u-boot on to TX2 eMMC **URL:** \ **Category:** Jetson TX2\ **Created:** [February 6, 2020, 11:39pm UTC](https://forums.developer.nvidia.com/t/problem-flashing-u-boot-on-to-tx2-emmc/111601 "2020-02-06T23:39:38Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![vinmeen](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@vinmeen](https://forums.developer.nvidia.com/u/vinmeen)\ **Post date:** [February 6, 2020, 11:39pm UTC](https://forums.developer.nvidia.com/t/problem-flashing-u-boot-on-to-tx2-emmc/111601/1 "2020-02-06T23:39:38Z")
After building my own version of u-boot according the procedure in [https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra%2520Linux%2520Driver%2520Package%2520Development%2520Guide%2Fuboot\_guide.html%23](https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra%2520Linux%2520Driver%2520Package%2520Development%2520Guide%2Fuboot_guide.html%23) I tried flashing the u-boot using the below command. But the flash fails with a return value of 13 ```auto sudo ./flash.sh -k LNX jetson-tx2 mmcblk0p1 ``` ```auto ############################################################################### # L4T BSP Information: # R32 , REVISION: 2.1 ############################################################################### # Target Board Information: # Name: jetson-tx2, Board Family: t186ref, SoC: Tegra 186, # OpMode: production, Boot Authentication: NS, ############################################################################### ./tegraflash.py --chip 0x18 --applet "/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/mb1_recovery_prod.bin" --skipuid --cmd "dump eeprom boardinfo cvm.bin" Welcome to Tegra Flash version 1.0.0 Type ? or help for help and q or quit to exit Use ! to execute system commands [0.0023] Generating RCM messages [0.0031] tegrarcm_v2 --listrcm rcm_list.xml --chip 0x18 0 --download rcm /home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/mb1_recovery_prod.bin 0 0 [0.0039] RCM 0 is saved as rcm_0.rcm [0.0043] RCM 1 is saved as rcm_1.rcm [0.0043] List of rcm files are saved in rcm_list.xml [0.0043] [0.0044] Signing RCM messages [0.0050] tegrasign_v2 --key None --list rcm_list.xml --pubkeyhash pub_key.key [0.0057] Assuming zero filled SBK key [0.0084] [0.0084] Copying signature to RCM mesages [0.0092] tegrarcm_v2 --chip 0x18 0 --updatesig rcm_list_signed.xml [0.0101] [0.0101] Boot Rom communication [0.0107] tegrarcm_v2 --chip 0x18 0 --rcm rcm_list_signed.xml --skipuid [0.0113] RCM version 0X180001 [0.0123] Boot Rom communication completed [1.0189] [2.0233] tegrarcm_v2 --isapplet [2.0261] Applet version 01.00.0000 [2.0466] [2.0487] Retrieving EEPROM data [2.0489] tegrarcm_v2 --oem platformdetails eeprom cvm /home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/cvm.bin [2.0506] Applet version 01.00.0000 [2.0862] Saved platform info in /home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/cvm.bin [2.1591] Board ID(3310) version(B02) sku(1000) revision(B.0) copying bctfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/P3310_A00_8GB_Samsung_8GB_lpddr4_204Mhz_A02_l4t.cfg)... done. copying misc_config(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/tegra186-mb1-bct-misc-si-l4t.cfg)... done. copying pinmux_config(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/tegra186-mb1-bct-pinmux-quill-p3310-1000-c03.cfg)... done. copying pmic_config(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/tegra186-mb1-bct-pmic-quill-p3310-1000-c04.cfg)... done. copying pmc_config(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/tegra186-mb1-bct-pad-quill-p3310-1000-c03.cfg)... done. copying prod_config(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/tegra186-mb1-bct-prod-quill-p3310-1000-c03.cfg)... done. copying scr_config(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/minimal_scr.cfg)... done. copying scr_cold_boot_config(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/mobile_scr.cfg)... done. copying bootrom_config(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/tegra186-mb1-bct-bootrom-quill-p3310-1000-c03.cfg)... done. copying dev_params(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/emmc.cfg)... done. Existing bootloader(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/nvtboot_cpu.bin) reused. copying initrd(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/l4t_initrd.img)... done. populating kernel to rootfs... done. populating initrd to rootfs... done. populating /home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/kernel/dtb/tegra186-quill-p3310-1000-c03-00-base.dtb to rootfs... done. Making Boot image... done. Existing sosfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/mb1_recovery_prod.bin) reused. copying tegraboot(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/nvtboot.bin)... done. Existing cpu_bootloader(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/nvtboot_cpu.bin) reused. Existing mb2blfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/nvtboot_recovery.bin) reused. Existing mtspreboot(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/preboot_d15_prod_cr.bin) reused. Existing mts(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/mce_mts_d15_prod_cr.bin) reused. Existing mb1file(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/mb1_prod.bin) reused. Existing bpffile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/bpmp.bin) reused. copying bpfdtbfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/tegra186-a02-bpmp-quill-p3310-1000-c04-00-te770d-ucm2.dtb)... done. Existing scefile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/camera-rtcpu-sce.img) reused. Existing spefile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/spe.bin) reused. Existing drameccfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/dram-ecc.bin) reused. Existing badpagefile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/badpage.bin) reused. copying wb0boot(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/warmboot.bin)... done. Existing tosfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/tos-trusty.img) reused. Existing eksfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/eks.img) reused. copying dtbfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/kernel/dtb/tegra186-quill-p3310-1000-c03-00-base.dtb)... done. Copying nv_boot_control.conf to rootfs Existing tbcfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/cboot.bin) reused. copying tbcdtbfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/kernel/dtb/tegra186-quill-p3310-1000-c03-00-base.dtb)... done. copying cfgfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/cfg/flash_l4t_t186.xml) to flash.xml... done. Existing flasher(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/nvtboot_recovery_cpu.bin) reused. Existing flashapp(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/tegraflash.py) reused. ***Updating [LNX] with boot.img*** ./tegraflash.py --bl nvtboot_recovery_cpu.bin --chip 0x18 --applet mb1_recovery_prod.bin --sdram_config P3310_A00_8GB_Samsung_8GB_lpddr4_204Mhz_A02_l4t.cfg --misc_config tegra186-mb1-bct-misc-si-l4t.cfg --pinmux_config tegra186-mb1-bct-pinmux-quill-p3310-1000-c03.cfg --pmic_config tegra186-mb1-bct-pmic-quill-p3310-1000-c04.cfg --pmc_config tegra186-mb1-bct-pad-quill-p3310-1000-c03.cfg --prod_config tegra186-mb1-bct-prod-quill-p3310-1000-c03.cfg --scr_config minimal_scr.cfg --scr_cold_boot_config mobile_scr.cfg --br_cmd_config tegra186-mb1-bct-bootrom-quill-p3310-1000-c03.cfg --dev_params emmc.cfg --cfg flash.xml --bins "mb2_bootloader nvtboot_recovery.bin; mts_preboot preboot_d15_prod_cr.bin; mts_bootpack mce_mts_d15_prod_cr.bin; bpmp_fw bpmp.bin; bpmp_fw_dtb tegra186-a02-bpmp-quill-p3310-1000-c04-00-te770d-ucm2.dtb; tlk tos-trusty.img; eks eks.img; bootloader_dtb tegra186-quill-p3310-1000-c03-00-base.dtb" --cmd "write DTB tegra186-quill-p3310-1000-c03-00-base.dtb; write LNX boot.img; reboot" Welcome to Tegra Flash version 1.0.0 Type ? or help for help and q or quit to exit Use ! to execute system commands [0.0075] Generating RCM messages [0.0083] tegrarcm_v2 --listrcm rcm_list.xml --chip 0x18 0 --download rcm mb1_recovery_prod.bin 0 0 [0.0090] RCM 0 is saved as rcm_0.rcm [0.0093] RCM 1 is saved as rcm_1.rcm [0.0093] List of rcm files are saved in rcm_list.xml [0.0093] [0.0093] Signing RCM messages [0.0100] tegrasign_v2 --key None --list rcm_list.xml --pubkeyhash pub_key.key [0.0106] Assuming zero filled SBK key [0.0133] [0.0133] Copying signature to RCM mesages [0.0139] tegrarcm_v2 --chip 0x18 0 --updatesig rcm_list_signed.xml [0.0148] [0.0148] Boot Rom communication [0.0154] tegrarcm_v2 --chip 0x18 0 --rcm rcm_list_signed.xml [0.0159] BootRom is not running [5.0339] [6.0376] tegrarcm_v2 --isapplet [6.0397] Applet version 01.00.0000 [6.0428] [6.0447] tegrasign_v2 --key None --getmode mode.txt [6.0463] Assuming zero filled SBK key [6.0466] [6.0467] Parsing partition layout [6.0479] tegraparser_v2 --pt flash.xml.tmp [6.0495] [6.0496] Creating list of images to be signed [6.0507] tegrahost_v2 --chip 0x18 0 --partitionlayout flash.xml.bin --list images_list.xml zerosbk [6.0751] [6.0751] Generating signatures [6.0760] tegrasign_v2 --key None --list images_list.xml --pubkeyhash pub_key.key [6.0766] Assuming zero filled SBK key [6.3232] [6.3232] Reading BCT from device for further operations [6.3233] Generating blob [6.3243] tegrahost_v2 --chip 0x18 --align blob_nvtboot_recovery_cpu.bin [6.3251] [6.3257] tegrahost_v2 --appendsigheader blob_nvtboot_recovery_cpu.bin zerosbk [6.3267] [6.3276] tegrasign_v2 --key None --list blob_nvtboot_recovery_cpu_sigheader.bin_list.xml [6.3282] Assuming zero filled SBK key [6.3329] [6.3344] tegrahost_v2 --updatesigheader blob_nvtboot_recovery_cpu_sigheader.bin.encrypt blob_nvtboot_recovery_cpu_sigheader.bin.hash zerosbk [6.3358] [6.3369] tegrahost_v2 --chip 0x18 --align blob_nvtboot_recovery.bin [6.3376] [6.3382] tegrahost_v2 --appendsigheader blob_nvtboot_recovery.bin zerosbk [6.3390] [6.3399] tegrasign_v2 --key None --list blob_nvtboot_recovery_sigheader.bin_list.xml [6.3404] Assuming zero filled SBK key [6.3426] [6.3434] tegrahost_v2 --updatesigheader blob_nvtboot_recovery_sigheader.bin.encrypt blob_nvtboot_recovery_sigheader.bin.hash zerosbk [6.3443] [6.3451] tegrahost_v2 --chip 0x18 --align blob_preboot_d15_prod_cr.bin [6.3459] [6.3466] tegrahost_v2 --appendsigheader blob_preboot_d15_prod_cr.bin zerosbk [6.3473] [6.3481] tegrasign_v2 --key None --list blob_preboot_d15_prod_cr_sigheader.bin_list.xml [6.3486] Assuming zero filled SBK key [6.3501] [6.3509] tegrahost_v2 --updatesigheader blob_preboot_d15_prod_cr_sigheader.bin.encrypt blob_preboot_d15_prod_cr_sigheader.bin.hash zerosbk [6.3516] [6.3523] tegrahost_v2 --chip 0x18 --align blob_mce_mts_d15_prod_cr.bin [6.3529] [6.3539] tegrahost_v2 --appendsigheader blob_mce_mts_d15_prod_cr.bin zerosbk [6.3582] [6.3593] tegrasign_v2 --key None --list blob_mce_mts_d15_prod_cr_sigheader.bin_list.xml [6.3599] Assuming zero filled SBK key [6.4073] [6.4085] tegrahost_v2 --updatesigheader blob_mce_mts_d15_prod_cr_sigheader.bin.encrypt blob_mce_mts_d15_prod_cr_sigheader.bin.hash zerosbk [6.4112] [6.4120] tegrahost_v2 --chip 0x18 --align blob_bpmp.bin [6.4127] [6.4133] tegrahost_v2 --appendsigheader blob_bpmp.bin zerosbk [6.4146] [6.4155] tegrasign_v2 --key None --list blob_bpmp_sigheader.bin_list.xml [6.4161] Assuming zero filled SBK key [6.4288] [6.4300] tegrahost_v2 --updatesigheader blob_bpmp_sigheader.bin.encrypt blob_bpmp_sigheader.bin.hash zerosbk [6.4312] [6.4319] tegrahost_v2 --chip 0x18 --align blob_tegra186-a02-bpmp-quill-p3310-1000-c04-00-te770d-ucm2.dtb [6.4325] [6.4332] tegrahost_v2 --appendsigheader blob_tegra186-a02-bpmp-quill-p3310-1000-c04-00-te770d-ucm2.dtb zerosbk [6.4344] [6.4352] tegrasign_v2 --key None --list blob_tegra186-a02-bpmp-quill-p3310-1000-c04-00-te770d-ucm2_sigheader.dtb_list.xml [6.4358] Assuming zero filled SBK key [6.4465] [6.4474] tegrahost_v2 --updatesigheader blob_tegra186-a02-bpmp-quill-p3310-1000-c04-00-te770d-ucm2_sigheader.dtb.encrypt blob_tegra186-a02-bpmp-quill-p3310-1000-c04-00-te770d-ucm2_sigheader.dtb.hash zerosbk [6.4485] [6.4491] tegrahost_v2 --chip 0x18 --align blob_tos-trusty.img [6.4498] [6.4504] tegrahost_v2 --appendsigheader blob_tos-trusty.img zerosbk [6.4515] [6.4522] tegrasign_v2 --key None --list blob_tos-trusty_sigheader.img_list.xml [6.4528] Assuming zero filled SBK key [6.4599] [6.4608] tegrahost_v2 --updatesigheader blob_tos-trusty_sigheader.img.encrypt blob_tos-trusty_sigheader.img.hash zerosbk [6.4618] [6.4626] tegrahost_v2 --chip 0x18 --align blob_eks.img [6.4633] [6.4639] tegrahost_v2 --appendsigheader blob_eks.img zerosbk [6.4645] [6.4653] tegrasign_v2 --key None --list blob_eks_sigheader.img_list.xml [6.4661] Assuming zero filled SBK key [6.4663] [6.4672] tegrahost_v2 --updatesigheader blob_eks_sigheader.img.encrypt blob_eks_sigheader.img.hash zerosbk [6.4678] [6.4687] tegrahost_v2 --chip 0x18 --align blob_tegra186-quill-p3310-1000-c03-00-base.dtb [6.4693] [6.4700] tegrahost_v2 --appendsigheader blob_tegra186-quill-p3310-1000-c03-00-base.dtb zerosbk [6.4711] [6.4719] tegrasign_v2 --key None --list blob_tegra186-quill-p3310-1000-c03-00-base_sigheader.dtb_list.xml [6.4725] Assuming zero filled SBK key [6.4804] [6.4813] tegrahost_v2 --updatesigheader blob_tegra186-quill-p3310-1000-c03-00-base_sigheader.dtb.encrypt blob_tegra186-quill-p3310-1000-c03-00-base_sigheader.dtb.hash zerosbk [6.4823] [6.4831] tegrahost_v2 --chip 0x18 --generateblob blob.xml blob.bin [6.4837] number of images in blob are 9 [6.4839] blobsize is 4097256 [6.4840] Added binary blob_nvtboot_recovery_cpu_sigheader.bin.encrypt of size 203312 [6.4856] Added binary blob_nvtboot_recovery_sigheader.bin.encrypt of size 89360 [6.4860] Added binary blob_preboot_d15_prod_cr_sigheader.bin.encrypt of size 63104 [6.4864] Added binary blob_mce_mts_d15_prod_cr_sigheader.bin.encrypt of size 2082144 [6.4868] Added binary blob_bpmp_sigheader.bin.encrypt of size 533904 [6.4872] Added binary blob_tegra186-a02-bpmp-quill-p3310-1000-c04-00-te770d-ucm2_sigheader.dtb.encrypt of size 466240 [6.4877] Added binary blob_tos-trusty_sigheader.img.encrypt of size 313152 [6.4879] Added binary blob_eks_sigheader.img.encrypt of size 1440 [6.4882] Added binary blob_tegra186-quill-p3310-1000-c03-00-base_sigheader.dtb.encrypt of size 344448 [6.4897] [6.4897] Sending bootloader and pre-requisite binaries [6.4906] tegrarcm_v2 --download blob blob.bin [6.4912] Applet version 01.00.0000 [6.5073] Sending blob [6.5074] [................................................] 100% [7.0118] [7.0149] tegrarcm_v2 --boot recovery [7.0173] Applet version 01.00.0000 [7.0369] [8.0402] tegrarcm_v2 --isapplet [8.0428] [8.0448] tegradevflash_v2 --iscpubl [8.0460] CPU Bootloader is not running on device. [8.0620] [9.0658] tegrarcm_v2 --isapplet [9.0702] [9.0726] tegradevflash_v2 --iscpubl [9.0749] Bootloader version 01.00.0000 [9.0915] Bootloader version 01.00.0000 [9.0926] [9.0927] Writing partition [9.0945] tegradevflash_v2 --write DTB /home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/tegra186-quill-p3310-1000-c03-00-base.dtb [9.0960] Bootloader version 01.00.0000 [9.1111] Writing partition DTB with /home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/tegra186-quill-p3310-1000-c03-00-base.dtb [9.1119] 000000000d0d000d: o open partition %s. [9.1241] [9.1241] Error: Return value 13 Command tegradevflash_v2 --write DTB /home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/tegra186-quill-p3310-1000-c03-00-base.dtb Failed to flash/read t186ref. ``` This problem arises only when I try to flash u-boot separately. If I simply flash using the below command, there are no issues. However, I want to flash u-boot only. Please let me know if there are any issues with my command. ```auto sudo ./flash.sh jetson-tx2 mmcblk0p1 ``` ---
**Author:** ![JerryChang](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/jerrychang/32/14043_2.png) [@JerryChang](https://forums.developer.nvidia.com/u/JerryChang)\ **Post date:** [February 7, 2020, 3:02am UTC](https://forums.developer.nvidia.com/t/problem-flashing-u-boot-on-to-tx2-emmc/111601/2 "2020-02-07T03:02:32Z")
hello deepak.rajamohan, you’re using wrong partition names for TX2 platforms. please check the flash configuration files for its partition names. thanks for example, ```auto $OUT/Linux_for_Tegra/bootloader/flash.xml boot.img ... tegra186-quill-p3310-1000-c03-00-base.dtb ``` ---
**Author:** ![vinmeen](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@vinmeen](https://forums.developer.nvidia.com/u/vinmeen)\ **Post date:** [February 7, 2020, 4:15am UTC](https://forums.developer.nvidia.com/t/problem-flashing-u-boot-on-to-tx2-emmc/111601/3 "2020-02-07T04:15:05Z")
The Linux\_for\_Tegra/bootloader/flash.xml file has a partition name for cboot.bin file. but not for the u-boot.bin file that I want to flash. According to ```auto ... cboot.bin ``` The file Linux\_for\_Tegra/bootloader/t186ref/cfg/flash\_l4t\_t186.xml has the partition name LNXNAME which should contain u-boot according to the table “Jetson TX2 Series (P3489 and P3489-nnnn), sdmmc\_user Partition” But when I use the command below it says “\*\*\* Update [LNXNAME] is not supported. \*\*\*” ```auto sudo ./flash.sh -k LNXNAME jetson-tx2 mmcblk0p1 ``` ---
**Author:** ![JerryChang](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/jerrychang/32/14043_2.png) [@JerryChang](https://forums.developer.nvidia.com/u/JerryChang)\ **Post date:** [February 7, 2020, 5:38am UTC](https://forums.developer.nvidia.com/t/problem-flashing-u-boot-on-to-tx2-emmc/111601/4 "2020-02-07T05:38:54Z")
hello deepak.rajamohan, u-boot is in the kernel partition, please refer to [U-Boot Customization](https://docs.nvidia.com/jetson/archives/l4t-archived/l4t-3231/index.html#page/Tegra%2520Linux%2520Driver%2520Package%2520Development%2520Guide%2Fuboot_guide.html%23wwpID0E05H0HA) for details. thanks ---
**Author:** ![vinmeen](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@vinmeen](https://forums.developer.nvidia.com/u/vinmeen)\ **Post date:** [February 7, 2020, 5:56am UTC](https://forums.developer.nvidia.com/t/problem-flashing-u-boot-on-to-tx2-emmc/111601/5 "2020-02-07T05:56:47Z")
I did refer to the link U-Boot Customization page and I understand that U-Boot is in the kernel partition. It says the name of the kernel partition is LNX. However, when I use this name I get error. This is what I mentioned in my original question. So what is the name of the kernel partition? ---
**Author:** ![JerryChang](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/jerrychang/32/14043_2.png) [@JerryChang](https://forums.developer.nvidia.com/u/JerryChang)\ **Post date:** [February 7, 2020, 6:25am UTC](https://forums.developer.nvidia.com/t/problem-flashing-u-boot-on-to-tx2-emmc/111601/6 "2020-02-07T06:25:22Z")
hello deepak.rajamohan, LNX is the kernel partition name for TX1, Nano; TX2 and Xavier is using different names. you may refer to [comment #2](https://devtalk.nvidia.com/default/topic/1071077/jetson-tx2/problem-flashing-u-boot-on-to-tx2-emmc/post/5426371/#5426371) to check the flash configuration files for all partition names. please using below commands to update kernel partition, for example, ```auto $ sudo ./flash.sh -r -k kernel jetson-tx2 mmcblk0p1 ``` ---
**Author:** ![nadeemm](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/nadeemm/32/367020_2.png) [@nadeemm](https://forums.developer.nvidia.com/u/nadeemm)\ **Post date:** [October 18, 2021, 6:19pm UTC](https://forums.developer.nvidia.com/t/problem-flashing-u-boot-on-to-tx2-emmc/111601/7 "2021-10-18T18:19:17Z")
Closed on October 18, 2021, 6:19pm UTC