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Error on Android Factory Reset with Recovery Image Signed

Question asked by Matteo Bissoli on Apr 12, 2018
Latest reply on Apr 24, 2018 by Matteo Bissoli

Dears,

 

in my project I use an i.MX6S and I have used code signing tool version 2.3.1 to sign u-boot.imx and boot.img of my Android 5.1 distribution.

Everything works fine and with my board fuse-locked I'm able to update only signed images.

Now I need to add signature also to Android Recovery image. I realized it similarly to boot.img signature and on board startup with correct keys combination I'm able to enter into a signed Recovery.

The problem is that if I made from Android UI a Factory Reset on reboot Recovery doesn't start and from this point also on startup doesn't start and I need to download again Recovery image with mfgtool to fix the problem.

It seems that factory reset corrupts in some way I don't understand the recovery partition.....any idea?

 

Thanks

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