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This is a discussion on help wanted: building the first PSP mod chip within the PSP Homebrew and Hacks Discussion forums, part of the PSP Development, Hacks, and Homebrew category; Has anyone seen this? http://www.dapreview.net/comment.php?comment.news.1573...
Wow, so that's what it looks like under there. lol :oOriginally Posted by psycho
How in the hell are you gonna be soldering something back on there? Beats me.
if you are reffering to that as the psp motherboard. let me inform that it is not. I am pretty sure that he stated that that is just a practice board and is not the real deal.Originally Posted by XteticX
Yeah, that was just a network card... The PSP should actually be easier since all the chips are smaller...
Putting them back on is whole different process. You have to basically attach a tiny ball of solder to each of those round points on the back of the chip, then you sit it on the board and re-heat it until the solder melts, and then let it cool... With any luck, _ALL_ the solder balls have re-attached. :)
There's kits you can buy for re-balling the chips (or if you buy new ones, they should come ready to go), but I'm still not sure how easy it is...
best of luck,hope u are successful
Originally Posted by chill392
that will only allow you to use a 20gig mp3 player (or any usb storage device) as a host. meaning you wont be able to store games and run them directly off that usb storage device, you can store games, or music and copy that the duo mem stick. So i guess if ur poor and dont have a pc this is a good way to transfer files.
Just a side note on this... Can't someone with a little programming knowledge make a program for the PSP to run stuff off of a USB harddrive? I doesn't _sound_ like it'd be hard (but I have no idea what's involved there... :) )
Ok last post before the weekend.
psyco, can you get me a close up of theay BGM from your test and its socket, I need to have a look at the damage to see what I am up against. I will PM you my personal e-mail.
also as for how I am going to reattach the chips, I am not going to, I am going to build two duplicate solder grids out of the mylar sheets and wire them to a logical switch that will inturn lead downstream (so to say) to another solder grid on the botom side. it is THAT grid that I will connect to the original firmware grid on the motherboard.
I am senceing alot of people do not realize the entirety of this project, there is not going to be a hard drive, there is not going to be any changes to the way the PSP addresses the memory stick and there will NOT be any significant changes to the firmware, liken this to dual gas tanks on a truck. your engine does not know it has twice the gas, your gas gage only shows the status of the tank that is switched on, but if you start running out of gas, you switch to the other tank, the truck has no idea what you did, the gas gage does not show a new tank, all it knows is suddenly there is more gas than there was a moment ago. this is a similar consept. only in this case if you switch tanks while the engine is running both gas tanks will explode simultaneously. Additionally I think people are under the impression that this mod will be easy. let me assure you, it wont. to perform this I will have to hand manufacture the mylar tracers useing hand cut gold sheets, cut into the trace lines needed for the project, each line will have to be laser cut as they HAVE to be cut to EXACT length and thickness. additionally, when the tracers are cut I have to encase them in mylar films. this sound easy? well think of it like this: the tracers (or tiny wires) will sit less than 1nm (nanometer) apart, this is close enough for electrons to stray from one tracer to the next, this is what is called a short. the only way to prevent this is to ensure that they are completely seperated by mylar. I'm sure you put a screen protector on your PSP right? well immagine trying to put 2 of those things TOGETHER without getting any air trapped between them. that is what it will be like. one bubble could spell disaster. and this BTW is one of the reasons why I need a clean room. I need to be able to remove particualtes and air to allow me to do this w/o haveing the bubbles. this should be fun! now this is what I will have to deal with in just makeing the mylar tracer strips. after that, I have to deal with hand soldering 137 microscopic pins, or 'balls' to the mylar strip and trhe balls are less than 2 or 3nm apart! and I have to do that 3 times! once for each chip and once for the motherboard connection, next I have to find, program and install a logical switch that will switch 137 lines between 274 paralelling lines that will take some tallent, trust me. then I have to program the logical switch to monitor the PSP power and to halt operation if the PSP is powered on (so I dont fry My PSP the first time I switch the mod over> then after that, I have to trace the cmos batery on the PSP and find where it feeds power to the Firmware and I have to duplicate that on the mod chip (you want to be able to use standby on both firmware modules, trust me)then I have to again trace power but this time for the power from a second cmos batery to the mod firmware, this one will provide power to the "disabled" firmware while the "enabled firmware will be powered by the existing cmos batery, this way if you hit standby after swapping firmware, whatever was running while hitting standby will not be lost unless left for a month. then finally after all this, I need one more trace to connection to the cmos batery from the system board, this tracer will join the batery to the chargeing mechanism on the motherboard so the mod batery can be charged while the onboard batery sits idle and vice versa.
now I know this all can sound a little bit over whelming but if it works then mabey a dev group can take it like friendtech and provide a service in which you send your PSP in and for a fee they do it for you, I dont know. all I know is I am not looking formward to that blasted mylar stripping.
BTW, the link I posted yesterday was the wrong chip. sorry, the one I was looking at was 32/32 but it too showed "Engineering Sample" whatever that means. I have not made any progress on samsung and I am comeing to realize they are the only makers of the chips we need. grrr anyone have a contact inside samsung that might be able to help?
now, the wife is dragging me out camping now, Ill check back withg you all on monday... I hate the out doors... its so... outdoorsey. <shudder>
But, you will still have to ball the mylar as you mentioned... Look into a reballing kit for this, they look fairly straight forward, and aren't incredibly expensive (and would probably save you days of tiny detail work that'll end up making your eyes pop out...)Originally Posted by IcoNyx
Just a thought on this, I'm not quite sure how this works (in the PSP that is), but I believe what happens when you turn on the PSP is that the CPU reads the data from the NAND, loads what it needs back into the RAM and possibly reads back and forth between them... What if you took one chip, and soldered all 110 non-NAND related connection directly to the motherboard, and the remaining 27 that pertain to the NAND itself to the mylar with the switch? On the second chip, just use the 27 NAND connection (effectively making it just a 32 MB EEPROM). Then, when you power up, it would read the data from which ever chip is activated by the switch logic, but would always be using the first chip for RAM/etc... I don't know a great deal about these chips, so that my not even work, but it sounds good... And would save some time... (Hell, if we can find a completely, perfectly compatable 32MB EEPROM, maybe that's all we'd need to make this work... Just fake-out the PSP into thinking the seperate EEPROM is actually the NAND flash in the Samsung chip...)Originally Posted by IcoNyx
I just caught wind from a linux nut here at work who says that there is a group working on porting linux to the PSP, I knew this already (being a bit of a linux lover myself) but he says that they have already started working on the bios, now here is the issue, if they are working on the bios does this mean that the bios checks for signed code on the firmware? if so then this mod is dusted. reason: if it checks for signature then the bios is probably programed (when you flash the firmware it would update the bios as well) to look for a specific signature, this means no dual firmware posibility w/o hacking the bios, a job I am not up to. so please if anyone can find out I would be GREATLY appreciative.
dont mean I am done here, if the bios is set to check for a signature then I at least still plan on swapping the firmware and reflashing to 1.5. some hell or high BS from sony I WILL HAVE A 1.50 FIRMWARE!!!
is there any more news bout this updates improvements etc.. i dont mean to bother IcoNyx if he is working on this
why not just hook up a I/o interface to CMOS ( you know what i mean ) chip and flash it from there.
IcoNyx is gone for the weekend... See if there's more news on Monday... I think all the verbal groundwork is down, so it's just a matter of waiting for something to happen with hardware, which might take a week or two at best...
If I understand what he said in his last post correctly, here's the problem:
There's two flashable locations in the PSP: The firmware, and the BIOS? (I was kind of under the impression that these were the same, but I could be wrong)
When you update your firmware, it updates a code in the BIOS, and the fw & BIOS don't match, the PSP won't start up. So even if you took a 1.50 chip off a PSP MB, put on another chip, flashed it to 2.0, and then removed it and put the 1.50 back on, the system wouldn't start up becuase the codes are different.
I'm not certain this is actually the case with the PSP, but if it is, we are probably in trouble... :mad:
I would think the first test would be to do what I just described above (swapping chips and see if it keeps working) before spending all the time making mylar strips and what-not... Granted, that's easier to say than do (you need at least 2 PSP you willing to possibly destroy, and then the time/hassle of removing/replacing these chips...)
Does anyone make an actual chip ZIF-type socket that would work with the firmware chip? That would be perfect for a dev-type PSP...
I'm going to pop off the firmware and CPU chip tonight and see what the board looks like underneath... Unfortunately my hackable board is physically damaged, so it will never work again, all I can use it for is visual observation...
u could have 2 firmware chips and 2 bios chips (if there even seperate)Originally Posted by psycho
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Yeah, I have been thinking about this while my wife "communed with nature" (I friken hate nature, by sunday night, all I could think about was a cartoon of 'smokey-the-bear' with a little thought bubble saying "eh, SCREW IT!!" and holding a match to a pile of gas covered rags next to a 300 year old pine tree with 50 spotted owle nests in it.) and what I have come up with was a similar soloution, in truth, I have no idea if the bios checks the firmware signature, or if there is even a signature at all. (BTW yes psyco there is a bios seperate from the firmware. it is prerequisite for any gui based archetecture to have a boot strap seperate from the bios. if you want to know more look up "OSI model"+"bootstrap" in google. most of what you will find pertain to network booting but the consept is the same: POST> power on, system BIOS (Basic Internal Operateing System... depending on yout comp-sci professors preferance) discovers all connection hardware and IRQ (which is the hardware address used for any hardware to be able to contact and communicate with the processor without interupting some other hardware durring its attempts to do the same) then after it drops power to all the hardware then it seaks for a bootstrap, in this cast the firmware, and poweres it on and loads the first executable code found in the first 1000 clusters of the data storage device. this is OS hand off, then the OS loads. all this happens in the first 2 or 3 nanoseconds of powering the PSP on. think of the SONY splash logo as the windows spash screen when powering on your PC. this all is required for any "PC" archetecture. now the firmware and BIOS can be on the same chip, but that is a bad idea, if a flash is done improperly then there is no recovery, sony engeniers would have to be absolute imbasiles to put them on the same chip... hmmm... mabey... NOPE, no, they invented the PSP they cant be THAT dumb... right?)Originally Posted by KINGOFNOOBS
ANYWAY, ither way, when I do the "stripdown" I will hunt for a bios module, and if I find one I will plan to include it in the mod as well (hope for the best, plan for the worst.)
just one request... SOMEONE BURN DOWN ALL THE FORRESTS IN IDAHO SO I DONT HAVE TO GO CAMPING EVER AGAIN!!! have I mentioned I hate camping? well I do. the wife decided to not come home untill this morning, I had to work @ 12:00 and that meant I came to work directly from the camp site... while SHE got to go home and take a warm shower... I smell like a friken horses A$$!!! I hate camping.
more later when I can get my head cleared. and dont worry, I wont touch my PSP and get it all dirty and crap.
I am pretty sure that Sony would implement checking the firmware version in the BIOS because the Xbox implemented this feature into their BOIS check. If you really want to know if it does, just tap the bus between the firmware chip and the chip holding the bios. I don't know how many traces there are between the two, but hey, your entire project is a bit farfetched :)
Additionally the BIOS (and firmware) could be split up between two chips like they did on the Xbox so that could complicate matters more.
No, tell us how you really feel...Originally Posted by IcoNyx
Okay, this all makes sense now (Bootstrap and all), I just wasn't putting it all together for some reason... So the real question is does the Bootloader get updated with firmwares... Is it possible (well, likely?) that the BIOS is on the CPU itself? That would make duplicating it a real pain... There's a few little chips around the CPU that I can't find info for online.
I've created a really hi-res photo of the PSP main board, and I've also removed the Firmware chip and the graphics processor and have some photos of that as well. Possible caution: I ended up removing several traces and contact points from the board when removing these chips. It's quite possible that it was becuase of the previous board damage (the board was actually bent cuasing some of the contacts to rip out), but heat alone may have done some of the damage. You might need something with a little more temperature control than a heat gun... Also, the wi-fi connector and UMD switch melted rather easily... :) Best to shield those.
The pinout of the Samsung chip doesn't look like it matches that of the datasheet you referenced in an earlier post... (lots of IO points going to ground just doesn't look right...) Any other possible pinout-similar chips? I can't get their search engine to work correctly.
no Idea at this point, you have seen more of the underside of the firmware than me, I am going to be working on a FUNCTIONAL PSP so I am takeing a little more time to get to that, I need more infromation about teh system before I actually tear into it, I want to be at least 80% sure this has a snoballs chance of working before potentially destroying my PSP.
Yeah, definitely a good idea... The only reason I went for it was that it was damaged already... :) I'm thinking of buying a PSP w/ working board (cracked screen or something) if I decide to do any further hacking along these lines... Just depends on how cheap I can get one.
Hey! Good Luck Guys! Is There An Account I Could Send A Couple Of Bucks For Your Efforts?
Im Sick Off All This Firmware Crap, I Cant Wait For Mod Chips To Start Getting Going, And It Sounds Like You Guys Are Really Giving It A Push In The Right Direction!
what is up with all these "one post wonders" who writes every word with a big letter?
extremely annoying :S
and yeah, i wonder the same thing... when i see some progress on this, i will definently donate som bucks =)
Huh, Yeah....They Should Round Us "Wonders" Up And Just Ban Us From The Internet Huh?
How About You Relax And Dont Worry About Stupid Insignificant Things Like What Parts Of Words People Capitalize?
But Anyways, I Have A Question For Those Of You Who Keep Up With The Console Scene A Little More Than I Do. How Long Did It Take The First Version Mod Chips For Other Consoles To Appear? Were "Profesional Groups" Always The First To Release Experimental Prototypes?
I am relaxed, and I allready know what countries use capital letters in what kind of words. Maybe you sould let your shift-key relax.Originally Posted by nsmdx
Most modchips show up after a couple of months after the console release, but for some it may take over a year (gamecube, wich was first "hacked" through a PSO xploit). But keep in mind, NO modern-age colsole HASN'T been hacked, or HASN'T had a mod-chip released, so don't worry. The PSP will be hacked/will have a mod-chip, just be patient.
Hey, thanks man. I appreciate it, apparently modchips come out whenever they're done eh?
Thats cool, I'll wait, I was just wondering thats all since im not an expert on modchip history. Thanks for the info.
thank you psp20, I will look into one or two of 'em, I am not sure if I'll actually get them, I suck at ebay, I ither get outbid or screwed with crap. I kind of gave up on it. but the cause is worth the risk, right?Originally Posted by psp20
btw: I still hate camping and officially STILL smell like a horses A$$ as I have not bathed in 3 days... yeah, camping sucks. that's why man invented the TV, the video game console, the DVD, indoor plumbing, central heating and airconditioning and cars. anyone who post otherwise in this forum is a lyer because no selfrespecting nature lover would be reading this friken post!!!
Hey, if you ever get the mod chip working, we can all take you out on a camping trip to celebrate!!!!!
Oh wait...... Never mind, we are trying to encourage you to succeed, aren't we?
Originally Posted by psycho
yeah... keep it up wise-@$$
as for an update, I have a PSP tester on the way when I get it I will begin stripping. I hear it is a 1.52... no value right? :eh:
nice....finnaly..a mod-chip!!!!1 J:
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