Changed my build.prop and it wont boot how to fix it??

[AC Question]

I have a tablet name lenovo ideatab a2109. I just want to change my android version in number in about device option so I changed my device build.prop from 4.1.1 to 5.0.0 then i try to reboot my device and it wont boot..

 

[Rukbat]

It's probably doing an integrity check of the ROM, and the checksum or hash or whatever they're using doesn't work out because the ROM is corrupted (as far as the integrity check is concerned), so instead of destroying the hardware (which can happen if the firmware gets corrupted the wrong way), it just abends (aborts the boot process).

You're probably going to have to reflash the ROM. XDA doesn't have a forum for the 2109, but if no one here posts instructions, ask for assistance at A3000 Q&A, Help & Troubleshooting - maybe someone there knows how Lenovo flashes and where you can find a ROM image for that particular device.

 

[Ali Sherazi]

how to reflash my tablet and i dont wanna lose it plzz!!