$ sudo ./flash.sh -x 0x19 -y SBKPKC -u ${KEYS_DIR}/pkc.key -v ${KEYS_DIR}/sbk.key jetson-xavier-nx-devkit-emmc mmcblk0p1
###############################################################################
# L4T BSP Information:
# R32 , REVISION: 6.1
###############################################################################
sbk_keyfile is present, but no user_keyfile; set user_keyfile to zero keyfile
# Target Board Information:
# Name: jetson-xavier-nx-devkit-emmc, Board Family: t186ref, SoC: Tegra 194, 
# OpMode: production, Boot Authentication: SBKPKC, 
# Disk encryption: disabled ,
###############################################################################
copying soft_fuses(${SDKMANAGER_DIR}image/JetPack_4.6_Linux_JETSON_XAVIER_NX_TARGETS/Linux_for_Tegra/bootloader/t186ref/BCT/tegra194-mb1-soft-fuses-l4t.cfg)... done.
./tegraflash.py --chip 0x19 --applet "${SDKMANAGER_DIR}image/JetPack_4.6_Linux_JETSON_XAVIER_NX_TARGETS/Linux_for_Tegra/bootloader/mb1_t194_prod.bin" --skipuid --soft_fuses tegra194-mb1-soft-fuses-l4t.cfg --bins "mb2_applet nvtboot_applet_t194.bin" --cmd "dump eeprom boardinfo cvm.bin;reboot recovery" --key "${KEYS_DIR}/pkc.key" --encrypt_key "${KEYS_DIR}/sbk.key" 
Welcome to Tegra Flash
version 1.0.0
Type ? or help for help and q or quit to exit
Use ! to execute system commands
 
[   0.0041 ] Generating RCM messages
[   0.0059 ] tegrasign_v3.py --key ${KEYS_DIR}/sbk.key --file ${SDKMANAGER_DIR}image/JetPack_4.6_Linux_JETSON_XAVIER_NX_TARGETS/Linux_for_Tegra/bootloader/mb1_t194_prod.bin --offset 4096
[   0.0065 ] Key is a SBK key
[   0.0235 ] Key Size is 16 bytes
[   0.0235 ] 245216
[   0.0297 ] 
[   0.0315 ] tegrahost_v2 --chip 0x19 0 --magicid MB1B --appendsigheader ${SDKMANAGER_DIR}image/JetPack_4.6_Linux_JETSON_XAVIER_NX_TARGETS/Linux_for_Tegra/bootloader/mb1_t194_prod_encrypt.bin zerosbk
[   0.0322 ] Header already present for ${SDKMANAGER_DIR}image/JetPack_4.6_Linux_JETSON_XAVIER_NX_TARGETS/Linux_for_Tegra/bootloader/mb1_t194_prod_encrypt.bin
[   0.0339 ] 
[   0.0362 ] tegrasign_v3.py --getmode mode.txt --key ${KEYS_DIR}/pkc.key
[   0.0377 ] Key si[   0.0380 ] ze is 256 bytes
[   0.0404 ] tegrasign_v3.py --file ${SDKMANAGER_DIR}image/JetPack_4.6_Linux_JETSON_XAVIER_NX_TARGETS/Linux_for_Tegra/bootloader/mb1_t194_prod_encrypt_sigheader.bin --getmontgomeryvalues montgomery.bin --key ${KEYS_DIR}/pkc.key --length 1136 --offset 2960 --pubkeyhash pub_key.key
[   0.0417 ] K[   0.0419 ] ey size is 256 bytes
[   0.0523 ] Saving pkc public key in pub_key.key
[   0.0539 ] tegrahost_v2 --chip 0x19 0 --pubkeyhash pub_key.key --setmontgomeryvalues montgomery.bin --updatesigheader ${SDKMANAGER_DIR}image/JetPack_4.6_Linux_JETSON_XAVIER_NX_TARGETS/Linux_for_Tegra/bootloader/mb1_t194_prod_encrypt_sigheader.bin ${SDKMANAGER_DIR}image/JetPack_4.6_Linux_JETSON_XAVIER_NX_TARGETS/Linux_for_Tegra/bootloader/mb1_t194_prod_encrypt_sigheader.sig oem-rsa
[   0.0563 ] 
[   0.0584 ] tegrabct_v2 --chip 0x19 0 --sfuse tegra194-mb1-soft-fuses-l4t.cfg.pdf sfuse.bin
[   0.0593 ] 
[   0.0611 ] tegrarcm_v2 --listrcm rcm_list.xml --chip 0x19 0 --sfuses sfuse.bin --download rcm ${SDKMANAGER_DIR}image/JetPack_4.6_Linux_JETSON_XAVIER_NX_TARGETS/Linux_for_Tegra/bootloader/mb1_t194_prod_encrypt_sigheader.bin 0 0
[   0.0619 ] RCM 0 is saved as rcm_0.rcm
[   0.0637 ] RCM 1 is saved as rcm_1.rcm
[   0.0638 ] RCM 2 is saved as rcm_2.rcm
[   0.0638 ] List of rcm files are saved in rcm_list.xml
[   0.0638 ] 
[   0.0638 ] Signing RCM messages
[   0.0660 ] tegrasign_v3.py --getmontgomeryvalues montgomery.bin --key ${KEYS_DIR}/pkc.key --list rcm_list.xml --pubkeyhash pub_key.key
[   0.0674 ] Ke[   0.0676 ] y size is 256 bytes
[   0.0970 ] Saving pkc public key in pub_key.key
[   0.0966 ] Copying signature to RCM mesages
[   0.0984 ] tegrarcm_v2 --chip 0x19 0 --updatesig rcm_list_signed.xml --pubkeyhash pub_key.key
[   0.0997 ] 
[   0.0997 ] Boot Rom communication
[   0.1015 ] tegrarcm_v2 --chip 0x19 0 --rcm rcm_list_signed.xml --skipuid
[   0.1021 ] RCM version 0X13
[   0.1027 ] Boot Rom communication failed
[   5.1696 ] 
Error: Return value 3
Command tegrarcm_v2 --chip 0x19 0 --rcm rcm_list_signed.xml --skipuid
Reading board information failed.