6.38 to 6.35/6.20 downgrader

Works on PSP 1000, 2000, 3000, 4000 (newer 3000) or PSPgo!

For 07g & 09g:
You can downgrade from 6.38 to 6.35

For PSP1000 [01g], PSP2000 [02g], PSP3000 [03g to 09g], PSPGo[05g]:
From Firmware 6.38 to 6.35 to Firmware 6.20

note: 6.37 users must upgrade to 6.38 first to be able to use the Downgrader

Tutorial
1.Download Update file and Downgrader
[6.38 to 6.35/6.20 Downgrader]

[Official PSP Firmware 6.35]
[Official PSP Firmware 6.35 for PSP GO]

[Official PSP Firmware 6.20]
[Official PSP Firmware 6.20 for PSP GO]

2.Copy the Downgrader to ms0:/PSP/GAME

3.Next, copy EBOOT.PBP to Ms0:/PSP/GAME/UPDATE

4.Launch the Downgrader from your XMB


5.Press X to start


6.You will see the usual update process

7.Now a BSOD (blue screen) will appear: (Don't worry it's not bricked )


8.Press O to fix the problem

9.That's it!