OK - need some advice here guys (or gals) - since yesterday I've tried TWICE to put 5.50 GEN-5 on my 1003 PSP over the 5.00 M33-6 and in both cases I've ended up with semi-bricked PSP (black screen after 5.50 update / reboot) and needed to use Pandora to get back to 5.00 ...
What I'm doing wrong here? This is the first time I'm NOT able to put new custom FW on PSP ...