[Acid92566]

Just tell me how I can updgrade my custom firmware 3.33 m33 to 5.50 MHU a complete guide please a complete guide
, i know how to downgrade 6.10ofw to 5.50mhu,
can use that tutorial to upgrade my installing 5.00 ofw then 5.00m33 i think then 5.50 and then 5.50mhu ,
please im in a hurry
Reply as soon as possible !

[Acid92566]

And when i started psp ofw 5.03 its says game could not b started or found !
please help me out

[Killer]

Firstly, don't write in huge letters, we can read what you're asking just fine. However, you've lost me slightly. There is no such firmware as 3.33 M33, and you then mention 5.03 OFW.

Can you please just tell us what firmware you are currently on?