system update via microSD

JLEE

Hello,
I use firefly-rk3288 android 5.1 sdk.
I want to update the system with microSD, but I can't.
I made update.img and wrote to microSD. I reboot the microSD after insert it into the board, but update is fail.
Please help me.

penguin

Hi, if you'd like more help, please elaborate the detail, like how you wrote the update.img to microSD,
and how the update fails.
Also, to troubleshoot, the detail log from the serial console is a must-have.

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