mobile

Hello!
I had problems with my lenovo s820 network signal so I tried to flash different roms. My phone is CN version, I downloaded firstly older rom, but network coverage was bad again so I flashed kitkat from needrom.
It was working fine but problems with network still persisted so I tried to flash the backup of the rom that came with the phone. It was working before, but now I am stuck in animation logo and phone stays there, no restart no nothing.
I downloaded the rom through SP Flashtools Download (DA DL Checksums).
Little help will be much appreciated. Thank you!

The original rom that came with the phone was 1.0 1427 ( I think). I made a full backup of it through sp flash tools and after that droid tools (like the guide here in the forum). After that I flashed vibe 2.0 latest from needrom (I flashed it through CWM and it worked great). Since I couldn't root it I tried to flash back my older rom (that came with the phone). I did it with 3.13 with DA DL Checksums. After that when it didnt work I tried same with latest flashtools (5.13).
Someone suggested that I make factory/data reset and wipe cache but problem is I have no recovery on the phone (it enters factory mode). WHen I try to flash recovery with the scatter inside the recovery it says error 8038 (also for another roms). Do you think this is the solution of the problem and is it possible that I use the scatter file from my backup of the initial rom (untick all except recovery) and select the recovery image to install?).
I am afraid that I replace something and make things even wors.

Edit: The backup is working since I already did 2 flashes from it before.

Best Wishes!:)