I already regret trying to add custom ROM. topic

Hello,

I tried to flash custom ROM, but something somewhere went terribly wrong.

I did read some guides on flashing before attempting this and did make some precutions as well.
Such as creating ROM backup with CWM and copying efs folder with Root browser.

Unfortunately I didn't succeed with the flash. Now the phone can turn on, but there is no network service, and IMEI number is missing.
I tried to go back to my original ROM, but that didn't fix the problem.

I tried to gather as much information as possible, but it seems that information on this device is a bit outdated. For example, I wanted to try to flash back to stock ROM with odin, but most links with stock ROM are down. The one that isn't down only provides .7z file instead of md5,tar file that is required by odin.

The device works, just can't connect to mobile network.

Is there something I could do?