We're running on IMX8mini, Android9.0, 8G EMMC, flash partition with partition-table-7GB.img, and I can build out the OTA file, update.zip.
And I've verified this .zip file with update_device.py script, to make sure this .zip is not corrupted.
I put this update.zip to the USB stick, and plugin into the device. I checked the UI and the logcat, the system successfully detected this USB stick, and I can browse the files on the USB stick.
But that's all, the system didn't show up the upgrade menu to prompt me to do upgrade, even I waited for hours.
Could anyone give me some tips? As we know, put upgrade.zip to SDcard/USB stick, and plugin into the system, would let system prompt upgrade, which is a standard behavior of Android.