How can I reflash the "MB1_BCT" emmc partition without recover mode

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
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1

Hi, guys,

I’m no usable develop carry board and I couldn’t enter recover mode work with our carry board.
I usually reflash the “kernel-dtb” partition via “flash.sh” script with “–no-flash” to generate the target file and the flash it into “kernel-dtb” partition “/dev/mmcblk0p36” by the “dd” command.
Now, I want to use the same method to reflash the “MB1_BCT” partition, but I found there’s not a “MB1_BCT” partition exist on the device. but this partition is exist in the config file “bootloader/flash.xml” as below, why?
And any idea to reflash it without recover mode?

36
37 <allocation_policy> sequential </allocation_policy>
38 <filesystem_type> basic </filesystem_type>
39 65536
40 <file_system_attribute> 0 </file_system_attribute>
41 <allocation_attribute> 8 </allocation_attribute>
42 <percent_reserved> 0 </percent_reserved>
43 Required. Slot A; contains MB1 boot configuration table.
44

Thank you in advance!

3

Can any one help for this?

4

Hello,

There is a method that you can try to update the content in BUP and use the updater to update the board.

https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra%2520Linux%2520Driver%2520Package%2520Development%2520Guide%2Fbootloader_update_agx_tx2.html%23wwpID0E0IB0HA

Also, not sure why you cannot enter recovery mode on your custom board. You don’t have usb0 connection there?

5

Thanks Wayne for your reply.
I’ll try it later.

There’s no usb OTG support on my carrier board, and w/o “FORCE RECOVERY” button also.

Thanks,
Benson