Updating custom firmware psp 1000
If your PSP crashes, do a hard reboot and try again. Sony didn’t like this though, so they made sure this wasn’t possible with all next releases and/or firmwares.
Once Patch SFO is done, press start to reboot your PSP. Again, hold start for a few seconds when hovering over the x Loader folder. Now, they could load nearly any piece of code using savefiles.
Therefore, for all the speedreaders out there: So we want to install a custom firmware (m33 to be exact).
Sadly, we’ll need to have firmware 1.50 to install.
In this case, a tiff file is used to change the version number to 1.00, after which you’ll be able to update to 1.50. PBP file in X: PSPGAMEUPDATE (where X: is your PSP) and extract the MPH Downgrader zip in your PSP root (main folder). Don’t be afraid, this is just the program doing its work. If it fails to do so, just select the PSP root (main folder) manually. Unzip the Patch SFO EBOOT to X: PSPGAMEPatch SFO and the FW 1.50 EBOOT.
If you are prompted about replacing any files, click ‘Yes to All’. Wait about 30 seconds and restart your PSP (hold your power switch up until it switches off and turn it back on). You’ll then encounter another error, press O to restart. PBP file to X: PSPGAMEUPDATE (where X: is your PSP).