I have some hardware problems with my device so I want to send it in WARRANTY, so now I need to return on stock firmware and revert to a stock boot+recovery+rom
Is this the right way to REVERT all to stock? :
1. I need a boot.img (a stock one, I think B118, it is a good rom for warranty?) <---- where to find it
2. I need a recovery.img (a stock one, B118? ) <---- found this (http://www.androidfilehost.com/?fid=23252070760973625 )
3. I downloaded a stock rom B118 on my SD (dload/update.app)
4. Have I to UNROOT my device?
Thank you very much