PSP Firmware Guide!

[The Z]

hmm it seems I really dont remember the old days cause as far as I can remember on 3.XX you could simply
get the 6.60 OFW and run it from XMB :/

or use the HC Recovery Flasher to update to 5.00 M33 or 6.20 OFW

Afaik you need 3.71 M33 for using the HC Recovery Flasher to update to higher CFWs/OFWs. And all the CFWs up to 3.60 M33 had the famous DADADADA error while trying to update to OFW.

[Casavult]

If he came from an earlier firmware, he had to update to the 3.52 M33-4, for updating to 3.71 M33. From 3.71 M33 he is able to update to 6.60 OFW.


@NNNRT:

Try to launch the 3.71 M33 installer without changing the kernel, maybe it does work.

This.^

I'd suggest 6.60 ME when you've update, NNNRT.

[The Z]

If he came from an earlier firmware, he had to update to the 3.52 M33-4, for updating to 3.71 M33. From 3.71 M33 he is able to update to 6.60 OFW.


@NNNRT:

Try to launch the 3.71 M33 installer without changing the kernel, maybe it does work.

This.^

I'd suggest 6.60 ME when you've update, NNNRT.

He has to update to 3.71 M33 before he can update to 6.60 ME

[Casavult]

If he came from an earlier firmware, he had to update to the 3.52 M33-4, for updating to 3.71 M33. From 3.71 M33 he is able to update to 6.60 OFW.


@NNNRT:

Try to launch the 3.71 M33 installer without changing the kernel, maybe it does work.

This.^

I'd suggest 6.60 ME when you've update, NNNRT.

He has to update to 3.71 M33 before he can update to 6.60 ME

That's what I meant.

[suster]

I followed the entire tutorial to upgrade the CFW but when I try to correct the version.txt in the psp my pc don't show the directory VSH

I'm now using the CFW 5.50 prometheus v4 and is a psp-1001

[The Z]

Are you sure you are connected to the flash0?

[stevealexanderames]

you can easily skip this using Frostegater's VerGen it's a very useful homebrew that can flash the version.txt you need without going mad

[fate6]

you can also use PSPfiler to edit it
(just use hacker mode)

[The Z]

I would say changing it via PC or frostegaters VerGen is the most safe way to do it, it IS possible via PSPFiler, but if you screw up, you have a semibrick.

[suster]

yes I'm sure that I tried in the flash0 and the other flash as well

I'm gonna try this Frostegater's VerGen
edit
ok so how this prog would help me change the version.txt