GummyJAR Music and Camera Not Working

[TheSavageSquid]

I love GummyJAR, but I can't take pictures and I can't play any music. I heard I could use maderstock 340 to wipe it to stock, then root, then do GummyJAR, but whenever I install maderstock, the boot loader fails, I get

Bootloader
90.74
Err:A5,69,35,00,3D

Battery OK
OK to Program
Connect USB
Data Cable

So I flash back to VRZ A955 2.3.20, I try again, same thing.

How can I fix this problem?