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And custom firmwares run just as well as 1.50, with more features. Has kernel mode been unlocked on 3.60? I thought homebrew had to be usermode? Until programs like Bookr run on 3.xx my "fat" PSP stays at 1.50 and you might want to try while you still can and obtain a "fat" PSP ...

Burrito,

while this is interesting, if your goal is to downgrade to 1.50 why not just use the free "Pandora" service mode unbricker/downgrader/reflasher made by 'Prometheus Project'?

You can find it here
http://www.noobz.eu/joomla/news/pandoras-battery.html

KXploit circumvents a copy protection mechanism. I think it's more an "execution of unauthorized (unsigned) code prevention" mechanism. If you're really hesitant, only release the 1.0 EBOOT.PBP and most users will be able to convert this to a kxploit version (using PBP Unpacker or PSPBrew...

noobz.eu (http://www.noobz.eu/) released a patched version of PspPet's PSARDumper that dumps and decrypts both the 3.00 and the 3.01 firmware (in fact it does all known firmwares).

Perhaps they only flash certian files via it, to the extent that they can run an update file via the XMB...? They way I heard the rumour is that the battery is used to put the PSP in service mode and the firmware is reflashed from a 'special' memorystick. From what SANiK said about the long signal ...

The first thing they do to a PSP is actually open up the battery compartment, and then take out the battery to see the warrenty sticker. Then a SONY worker sticks in a special adapter connected to a computer with a PSP battery style shape, and then flips on the switch. The battery sends a long sign...

I'm using PBP Unpacker and it has a PIC0.PNG and a PIC1.PNG PIC1.PNG gives you a "full" background pic and PIC0.PNG gives you a (scaled) overlay background i.e. part of the VSH is still visible. I don't see any reference to UNKNOWN.PNG? EDIT: It appears in older versions of PBP Unpacker, P...

I really got no clue about such stuff, but could it be that somewhere at 0xbfc... is some kind of instr counter or mem addr pointer, dependent on the currently executed operation? Doesn't make much sense elseway, since the double dump should definately get the same result if no other prx interferes...

I downloaded this file, it appears to be more of the development folder rarred up. I stumbled on the following file in this archive: PSPSOne\PSPONE\BIOS\SCPH1001.BIN with the string Sony Computer Entertainment Inc. CEX-3000/1001/1002 by K.S. I'm not in a position to verify this, but if this is an of...

I wonder, does this exploit now allow for the 2.60 IPL key(s) to be recovered or is it too late because GTA:LCS has to be loaded in memory?

Getting back to the problem with the PSP...

...based on the description of the bootup behaviour, does anyone think it's possible it's a faulty background picture that may cause this problem? Would it be OK to just wait for early June and then on the 2nd powerup it may work again?

I've heard the rumours about the special battery & memory stick combination as well (these come as a set for a specific firmware and need to be exchanged with Sony for a new set whenever a newer firmware is released, according to this rumour. IIRC, it started on the Brazilian PSP forum on Orkut....

Though it's an interesting discourse, I hope it's the last bit we've seen here about the inner workings of said programs, because the mods here are very touchy on this subject.

This is a great thread about the flashability of the PSP's nand and it would be a shame if it would get locked. Thanks guys.

Please note that there are two different official Japanese 2.00 updaters, an early one and a later one (this one matching the US version).

Of course special IPL revisions (kbooti.bin) does not perform those checksums :) And one of them has a flaw allowing to run decrypted prx :) Are you suggesting flashing your PSP 1.00/1.50 with this special IPL and a custom firmware would then allow you to boot this custom firmware (i.e. one consist...

First, DO NOT update the firmware. What firmware do you have now? If it's 1.00, 1.50, 1.51, 1.52 or 2.00 you are lucky and can have easy-to-load homebrew (or just downgrade to 1.50). If it's 2.01 or 2.50 you need the Grand Theft Auto: Liberty Cities UMD to run any homebrew on it that will work with ...

The only use would be launching 2.00 on a 1.50 and enjoy AVC.

PS
I'd remove that link to the 1.00 firmware if I were you.

All the kxploit-method entails is extract from the original v1.00 EBOOT.PBP: PARAM.SFO, ICON0.PNG and DATA.PSP Then repack PARAM.SFO and ICON0.PNG into the %-EBOOT.PBP and rename the DATA.PSP to EBOOT.PBP so in order to roll it back: - rename the 2nd EBOOT.PBP back to DATA.PSP - extract the PARAM.SF...

Oh and is Marco_N the guy who released the 'exploit' which did nothing but error? I'd say incompetence is more damaging to homebrew PR than a boring article on a game review website. No my dear rinco, your 'ad hominem' goes horribly wrong as I never released anything for the PSP. I read the article...

It appears IGN outdid itself again with the following article: http://psp.ign.com/articles/629/629453p1.html It's obvious the PSP homebrew community has a serious PR problem. Is there anything we can do about it? If I was better at writing, I could write up an article about current homebrew projects...

...now all we need is someone who reads/writes English and Japanese so this can be translated and posted on their PSP Wiki...

Warren,

have you contacted the PSP Video 9 community to see if you can use their MP4 codec, and lift it up to full resolution? I'm assuming here that the 76,800 pixel limitation is built-in Sony's own player and won't be an issue with PSP Media Center.

to compile a version of kxploit for mac os x? For me, the manual steps are - use PBPUnpacker to unpack EBOOT.PBP to temp - use PBPUnpacker to re-pack PARAM.SFO and PIC0.PNG to MS in /PSP/GAME/[FOLDER]%/ - copy DATA.PBP over to MS in /PSP/GAME/[FOLDER]/ and rename it to EBOOT.PBP - copy any extra ne...

Is there any idea how much the "unofficial" differs from the current v1.25?

(I can't access the Wiki nor read Japanese).

No, it's to reflash a devkit....which differs from a retail PSP. Which means the "problem" is to find out how -with respect to firmware flashing- a development unit differs from a retail unit. If this is a real difference in hardware, we're still at square one. If it's just (system) softw...

I may or may not have stumbled onto something; http://www.snsys.com/PSP/ProDG.htm Under "Target Manager" it says: # Integrated, safe Kernel flashing Update any "PSP™" development tools from a single location. Removes the need for an additional Linux PC. If they are talking about ...

If you had studied this board more carefully, you would have known that simply copying files over won't work. It has also been revealed that lflash: does not access the entire 32MB of flash memory, so that won't work either. Let's hope the sceNand driver work will pay off, see the beginning of this ...

Besides that, a certain portion of games work fine at 222 with frameskip; just for battery life sake 222 should be an option. But I guess that's why it's v0.1 ;c)

(...)Third, every bios flashing program I've used, checks the checksums of the files either during, or after the bios is witten. I would have to assume that alist of md5 sums or whatnot would be stored in the flashing program , or a file referenced by that program. Hence, the checksums would not ma...

IF you (1) currently own the ROM and (2) dumped it yourself and (3) only use one copy of said ROM at a time THEN it's perfectly legal to play it using an emulator.