cat /etc/nv_boot_control.conf
TNSPEC 3668-200-0001-G.0-1-2-jetson-xavier-nx-devkit-emmc-mmcblk0p1
TEGRA_CHIPID 0x19
TEGRA_OTA_BOOT_DEVICE /dev/mtdblock0
TEGRA_OTA_GPT_DEVICE /dev/mtdblock0

sudo nv_update_engine -i 2>&1 | tee nv_update_engine.l
Nvidia A/B-Redundancy Update tool Version 1.2
current slot 0
Start updating slot 1
Tegra User Block Device: /dev/disk/by-partlabel
Tegra Boot Block Device: /dev/mtdblock0
HEADER: MAGIC NVIDIA__BLOB__V2
HEX_VALUE 131072
BLOB_SIZE 46762598
HEADER_SIZE 48
NUMBER_OF_ELEMENTS 19
HEADER_TYPE 0
UNCOMP_SIZE 46762598
MB1_RATCHET_LV 0
MTS_RATCHET_LV 0
ROLLBACK_FUSE_LV 0
config COMPATIBLE_SPEC not found in /etc/nv_boot_control.conf
Device TN Spec: 3668-200-0001-G.0-1-2-jetson-xavier-nx-devkit-emmc-mmcblk0p1
config COMPATIBLE_SPEC not found in /etc/nv_boot_control.conf
Device TN Spec: 3668-200-0001-G.0-1-2-jetson-xavier-nx-devkit-emmc-mmcblk0p1
Device is fused board.
ENTRY_TABLE:
PART  POS  LEN  VER TNSPEC TYPE UPDATABLE
spe-fw  2328  94960  2    0  1
mb2  97288  170240  2    0  1
cpu-bootloader  267528  433648  2    0  1
secure-os  701176  373696  2    0  1
bpmp-fw  1074872  856112  2    0  1
rce-fw  1930984  273168  2    0  1
mts-preboot  2204152  24016  2    0  1
mts-mce  2228168  139968  2    0  1
mts-proper  2368136  3418256  2    0  1
sc7  5786392  65504  2    0  1
bpmp-fw-dtb  5851896  172720  2  3668-200-0001-G.0-1-2-jetson-xavier-nx-devkit-emmc-mmcblk0p1  0  1
bootloader-dtb  6024616  205152  2  3668-200-0001-G.0-1-2-jetson-xavier-nx-devkit-emmc-mmcblk0p1  0  1
VER  6229768  102  2  3668-200-0001-G.0-1-2-jetson-xavier-nx-devkit-emmc-mmcblk0p1  0  1
mb1  6229870  250032  2  3668-200-0001-G.0-1-2-jetson-xavier-nx-devkit-emmc-mmcblk0p1  2  1
BCT  6479902  2888  2  3668-200-0001-G.0-1-2-jetson-xavier-nx-devkit-emmc-mmcblk0p1  2  1
MB1_BCT  6482790  30112  2  3668-200-0001-G.0-1-2-jetson-xavier-nx-devkit-emmc-mmcblk0p1  0  1
MEM_BCT  6512902  198656  2  3668-200-0001-G.0-1-2-jetson-xavier-nx-devkit-emmc-mmcblk0p1  0  1
kernel  6711558  39845888  2    1  1
kernel-dtb  46557446  205152  2  3668-200-0001-G.0-1-2-jetson-xavier-nx-devkit-emmc-mmcblk0p1  1  1
Saving Entry table to /opt/ota_package/entry_table                       
spe-fw write: slot = 1 offset = 1572864 bytes = 94960                    
mb2 write: slot = 1 offset = 2097152 bytes = 170240                      
cpu-bootloader write: slot = 1 offset = 13500416 bytes = 433648          
secure-os write: slot = 1 offset = 18874368 bytes = 373696               
bpmp-fw write: slot = 1 offset = 29491200 bytes = 856112                 
rce-fw write: slot = 1 offset = 24772608 bytes = 273168                  
mts-preboot write: slot = 1 offset = 2424832 bytes = 24016               
mts-mce write: slot = 1 offset = 2686976 bytes = 139968
mts-proper write: slot = 1 offset = 7077888 bytes = 3418256
sc7 write: slot = 1 offset = 11403264 bytes = 65504
bpmp-fw-dtb write: slot = 1 offset = 32112640 bytes = 172720
bootloader-dtb write: slot = 1 offset = 15400960 bytes = 205152
VER write: slot = 1 offset = 33357824 bytes = 102
MB1_BCT write: slot = 1 offset = 720896 bytes = 30112
MEM_BCT write: slot = 1 offset = 1048576 bytes = 198656
Writing 39845888 bytes to /dev/disk/by-partlabel/kernel_b for kernel
Writing 205152 bytes to /dev/disk/by-partlabel/kernel-dtb_b for kernel-dtb
Update successful
Setting slot 1 as active boot slot
Rebooting system....10.9.8.7.6.5.4.3.2.1