Getting downgrade error, says phone is disconnected when trying to downgrade from Beta post withdrawing from beta enrollment, any other solutions to downgrade to Official 4.1
You can re-install software by using the PC version of Smart Switch. Once the software is re-installed, the device will be reset and all data that was generated during the Beta Program will be erased.
All data which had been backed up before installing the beta software can be recovered, but there may be limitations in recovering data that was created after installing the beta software.
If you need assistance, Samsung Service Centres support the reinstallation of official software.
