[Q] Turning the i9505 into i9505G : because of the bootloader ?

view story

http://forum.xda-developers.com – I'm wondering why we cannot flash directly the I9505GUEUBMFP (4.3) - U.S.A (XAR) firmware on "standard" i9505 as Faryaab told us here : http://forum.xda-developers.com/show....php?t=2342377 After reading some posts in dev section (Aerys is trying to bypass the problem, but I have no news since yesterday...), it seems that the bootloader won't allow complete flash of the i9505G firmware, as it has a "write protection enabled". Is this the main problem that avoid flashing ? So, are we forced to use only unofficial ports of i9505G firmwares ? There is another way to unlock/ (HowTos)