|
You can backup your device to your hard drive.
If you do this before installing a later version of the firmware and you want to go backwards: you can factory reset, install the firmware version that the backup matches and then copy the backed up files back to the device.
WARNING: the firmware version and the restored backed-up files MUST match. The firmware is expecting the database to be the same version as it is. If the versions are mismatched, the results are unpredictable, but probably will result in a poorly (or non-) functioning device.
|