I always wanted to have the latest GL2A firmware with dvd9 overburn, after a few hours comparing changes in c4eva(iXtreme) GL29 firmware with hexadecimal editor I was able to unlock gl2a.
I haven’t tried burning dvd9 with overburn yet, can someone confirm if it works? thanks.
GL2A_v2.bin (2 MB)
EDIT: Yes, it works correctly.
LiteOn iHAS424 B GL1B firmware:
GL1B_v2.bin (2 MB)
LiteOn iHAS224 B GL0B firmware:
GL0B_v2.bin (2 MB)
Credits to c4eva! Thanks