[Tutorial] Downgrading from Firmware 6.3X to Firmware 6.20

Because some guys asked me about a TUT how to Downgrade from Fw 6.3x, I made one.

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

You can downgrade with this downgrader from Firmware 6.39 to Firmware 6.20. From Firmware 6.38 to Firmware 6.20. From Firmware 6.35 to Firmware 6.20. And from Firmware 6.31 to Firmware 6.20.

Supported models:
PSP1000 [01g], PSP2000 [02g], PSP3000 [03g / 04g /07g /08g /09g], PSPGo[05g]

Unsupported models:
Nothing! (yet)

Identify your PSP model:

Nothing is easier than identifying your PSP's model:
1) Download [You must be registered and logged in to see this link.]
2) copy the extracted folder to PSP/GAME
3) Launch PSP Module Checker 1.0 via GAME » Memory Stick.
4) Now you'll see your PSP's model.
[You must be registered and logged in to see this link.]

I tested it by myself on a PSPgo with Datecode 9C and Firmware 6.38 ;=).

For this, you will need:

- PSP 1000, 2000, 3000, 4000 (newer 3000) or PSPgo
- a supported PSP model
- 6.38/6.35/6.31 » 6.20 Downgrader By Davee, ported to 6.38 by someone. V3.1
- Official PSP Firmware 6.20 for PSPGO
- Official PSP Firmware 6.20 for PSP 1000/2000/3000/4000
- Official PSP Firmware 6.35 for PSPGO
- Official PSP Firmware 6.35 for PSP 1000/2000/3000/4000

Tutorial

1.Extract the downloaded archive.

2.Ms0: (ef0:-) / PSP / GAME / copy the Downgrader to this folder.
Ms0: (ef0:-) / PSP / GAME / UPDATE / copy the official Firmware 6.20/6.35 Updater (EBOOT.PBP) for PSP 1000/2000/3000/40000 or PSPgo to this folder.

If you have anything lower than an 07g place the 6.20 update in PSP/GAME/UPDATE.
If you have an 07g or an 09g, place the 6.35 update in PSP/GAME/UPDATE.

3.It should look like this:
[You must be registered and logged in to see this link.]

4.Launch the Downgrader from your XMB.
[You must be registered and logged in to see this link.]

5.Press X to start the SCE Updater. (PSPgo Users: Press "X" twice)
[You must be registered and logged in to see this link.]

6.The 6.20 updater will appear, update as always.
[You must be registered and logged in to see this link.]

7.Now a BSOD ("Blue Screen of Death") will appear:
[You must be registered and logged in to see this link.]

8.Press O to solve the problem and you're done.

Did you get a white screen?
Press Start + Select + Triangle + Square while your PSP boots up!

Updater problems?

Spoiler:

9. Congrats...now you're on OFW 6.20, hope you enjoyed it ;).

Credits to flofrutch for writing this Tutorial