USB fix for 3.71 M33-2

[Cloudhunter]

source

Dark_AleX has released a BETA USB flash fix for 3.71 M33-2.

Here's what jas0nuk said at the release.

Dark_AleX has sent me this file for you guys to test, which he says should fix the flash0 over USB nand corruption issues.

The problem:
Sony's lflash driver cannot retrieve the last sector. DAX fixed this by using internal functions of the lflash to do it directly, but it appears this may be glitchy at random intervals (though he managed to restore an entire flash0 dump before releasing M33-2 and had no problems).
This was introduced in M33-2, rather than the original code. The fix for M33-2 was a separate ioctl handling issue.

The fix:
Overwrite flash0:/kd/usbdevice.prx with the attached file.
It uses the old flash0 over USB code, with the small-file corruption issue from 3.71 M33-1 fixed.

Obviously you'll have to use flash0 over usb to actually copy this file, MAKE SURE YOU HAVE A WORKING NAND DUMP BEFORE YOU DO, as you may corrupt the partition records when copying it. (Unlikely but possible).

He is releasing the source to this file very shortly.

And true to his word, he indeed released the source. Here's what Dark_AleX said.

This is the source of the last usbdevice.prx, in case anyone is interested.

Let's hope this one has not the bug.

Personally, I recommend installing this right away - especially if you use custom themes alot.

Download and give feedback via comments.

[DarthPaul]

Yay! Thanks Cloudy, I was starting to worry about this problem.

[Sonicboy 101]

This is great for those custom xmb people.

[Squidman]

so this fixes the issue caused in this thread:
http://www.dcemu.co.uk/vbulletin/showthread.php?t=76846

? so i should make a nand dump? if so....could you tell me the easiest way to do so, that doesn't bother my battery or just uses the mem-stick....if that's possible

[buildit92]

this is good. i was saying that he might not fix this, but i guess he still does care about the scene.

[blaz3d]

source


The fix:
Overwrite flash0:/kd/usbdevice.prx with the attached file.
It uses the old flash0 over USB code, with the small-file corruption issue from 3.71 M33-1 fixed.

Obviously you'll have to use flash0 over usb to actually copy this file....

thats not true at all. anyone whos had a psp for a while would be able to use pspfiler or somthing to the same accord. what i will be using is generic flasher, because its easy to use and can be launched from recovery if you mess up.

peace

[aminkr]

can someone help me,

there is no kd folder in my flash0 ??

i wanna try to create a new one but afraid it will make my psp a brick , a beautiful brick :P

EDIT:

just wanna make things clearer

in my flash0, i hv a folder called "km" and inside there is a lot of file,some of them is 'usb' , 'usbstor' . 'usbstorboot' but no 'usbdevice'

does this hv to do with other thing?

[BelmontSlayer]

there is no kd folder in my flash0

Make sure you have windows set to show hidden files and folders.

[alioh7]

ok i have a 3.71-2 m33 fat psp and got afew questions.

1-if i dont replace the old usb file will it affect furture upgrading to another firmware?

2-anyone tested if it worked yet?

help would be appreciated!

[Sonicboy 101]

I don't think it will effect the upgrading bit, but it effects when RCO's or other files like that are flashed. You should only really use it if you are going to customize the XMB.
EDIT: 1,000th post!