I have a device that uses UBIFS instead of YAFFS, and the system partition is truly read-only. As a result, I can only modify the system partition by completely reflashing it. My device is also not fastboot-friendly, so the only way I can flash it is to modify the manufacturer firmware.

Naturally, I would like to root it this way.

If I modify the manufacturer firmware, test it in an avd, and it WORKS, and then flash it to my device using stock recovery, what are the risks/chances that something will go wrong?

  • 1
    Possible signature or checksum verification -> won't boot. This is something that immediately comes to mind. – Andy Yan Jan 27 '17 at 15:03
  • Won't boot or won't flash? – Nonny Moose Jan 27 '17 at 15:06
  • And would I be able to recover with recovery? – Nonny Moose Jan 27 '17 at 15:07
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    @AndyYan If I'm not mistaking, stock recovery doesn't accept flashing anything that's not signed by the manufacturer. – Grimoire Jan 27 '17 at 15:36
  • 2
    If you can then you basically just got the key to every custom ROM's first problem - having to use a custom recovery to flash it. It ain't gonna be as easy as you think... – Andy Yan Jan 27 '17 at 16:23

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