NEO U22-XJ: 005FW (20200819) Is it possible to revert back to previous without losing everything?

minix4ever

Active member
Subject says it all.
Since I lost root in the upgrade process TWRP no longer works so I can recover my last backup :-(
 
You don't need root for TWRP if booting off the SD Card, how exactly are you using it?
I'm not booting from SD Card. Since High Speed is not enabled, I wanted to keep the option to copy files to it on my PC with a fast card reader/adapter. Maybe I'm mixing things up.
 
I'm not booting from SD Card. Since High Speed is not enabled, I wanted to keep the option to copy files to it on my PC with a fast card reader/adapter. Maybe I'm mixing things up.
If you have made full TWRP backups, ie all partitions, then you can restore them when booting TWRP off SD Card, for this you don't need root. If you wanted to go back to a previous firmware now without any full TWRP backups then I would suggest first creating a TWRP backup of the data partition only, then do a flash of FW004, boot at least once into Android then restore the data partion again via TWRP. Let me know if you need help with doing this.
 
How do I boot TWRP off the SD Card?
I think I have a full backup.
-Format the card to FAT32
-Copy the TWRP recovery.img onto the card
-Shut down the U22 and insert the SD Card
-Insert a paperclip into the recovery hole of the U22
-Press and hold the power button on the U22 until you see the bootloader screen then release but keep holding the paperclip in until the TWRP boot screen.
 
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