Hi totemtotem, did you fix your issue? I have an issue with the WiFi/Bluetooth and FM Radio circuit of a Galaxy S3 Neo (GT-I9301I) and would appreciate any help. Thanks
I have manual for s3 neo gt-i9300i: https://mega.nz/#!R5xhFSCJ!O0p9kTOB4d...
You can use Viper4Android app: https://forum.xda-developers.com/showthread.php?t=2191223
Can power for otg be enabled automatically instead of using otg enabler app: http://forum.xda-developers.com/galaxy-s3-neo/themes-apps/otg-enabler-t3423727
Can you add choosing rom during boot?