Nano fail when use ./flsh jetson-nano-emmc mmcblk0p1

The board was successfully flashed into 32.7.2 before。but when i want to flash my board to 32.6.1, it get some err. the last return is :
Error:Return value 8
Command tegrarcm --download bct P3448_A00_lpddr4_204Mhz_P987.bct
Faild flashing t210ref.

how can i fix this problem

hello xinzhenren,

may I know your working environment, is this a virtual machine?
are you using SDcard image or you’ve download JetPack release image?

thinks for your hellp. my enviroment is virtual machine .i have download [L4T Driver Package (BSP)] [Sample Root Filesystem] and do Follow the official tutorial to flash successfully several times。
by the way, i used ./flash.sh successfully just now,but i dont konw why i successed。
And i have a another question, my jetpack is 4.6 and L4T is 32.6.1.Maybe, i uesd "sudo apt update "and “sudo apt upgrade” let jetpack to 4.6.2 L4T 32.7.2.But i dont want my jetpack to4.6.2 l4T 32.7.2. how can i fix it.


hello xinzhenren,

did you mean the issue has resolved by re-flash the target?

this is Over-the-Air (OTA) update commands, it will upgrade the BSP version to later release,
you’ll need to avoid doing so if you would like to stick with your default release version.

Thinks
Yes re-flash and solved.
What if I install other programs that need apt update and upgrade .How can i do

Thinks for your help
Yes re-flash and solved.
What if I install other programs that need apt update and upgrade .How can i do

you should review /etc/apt/sources.list.d/nvidia-l4t-apt-source.list and keep the release version stay-on r32.6, after running $ sudo apt update, please also check $ apt list --upgradable to list all packages before you upgrade the platform.

Thinks. I am new here,Could you please tell me How to keep the release version stay-on r32.6

hello xinzhenren,

please see-also developer guide, Over-the-Air Update for reference,
thanks

Thank you for your answer!

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