jdflasher only supports cid53. And at present you cant back up a cid53 gdfs.

However if it does fail D-Unlocker has the ability to repair a corrupt GDFS.

Here


you can flash your phone with different firmware and custom packs etc.

At present that's about it until a new version of xs+ is released.

To be honest you say your new with SE's. IF your phone is working and your unsure then dont do anything.

Lavondys