
TeamGEN and GENyUS-developed custom firmware sporting the feature set of 5.50.
Word of warning: unlike 5.03 GEN, this custom firmware build is incompatible with the PSP-3000 as well as PSP units that have a TA-088 v3 motherboard. Installing 5.50 GEN-A on these specific models will render your PSP inoperable. Play it safe, folks.