In this video, Josh explains how he managed to retrofit a Falcon motherboard with a 65nm Jasper GPU. The Kronos chip would also work. Both 65nm chips are interchangeable. A writeup of the required steps is here: consolemods.or...
NOTE: We have now learned that there are no 80nm chips. The dies are simply optimized and in the case of the eDRAM, redesigned, hence the size shrink. They are still 90nm chips. The Kronos chip would also work. Both 65nm chips are interchangeable. I made a writeup of the required steps here: consolemods.org/wiki/Xbox_360:GPU_Retrofit
Well I found a spot on top after viewing the schematic but haha it's literally impossible to get to unless you a super badass and can tunnel under the silkscreen and solder inside...but no need I just got mad and fixed it like usual...no fun I must say but meh if I damage something it never is haha. Thank you immensely though for your reply oh and the schematic was 32 pages of going down the rabbit hole so know you've probably shaved hours off others seeking the answer to this very question (and there's a lot) so truly a huge thank you on behalf of myself and everyone in the awesome Xbox community. 🙌😇
@@Josh.Davidson yes sir that's what I do thank goodness ... Without a scope it'd been a nightmare. This is my first time using a Pico Flasher and WOW! Goodbye JR Programmer! That lil dude is an absolute blessing...no more messing with the finicky USB port on the JR Programmer and no more bread slice sized NAND X ...although they're awesome they can be cumbersome when ya got a small workspace. The Pico is tiny and works flawlessly! Love it.
Dude as i said to you in private messaging you have completely revolutionized engineering of these units. You are an Amazing man with such a bright future in Engineering.... I cannot wait to see what you do to the industry once you Graduate from College. Much love brother and i love the new JALCON Motherboard !!! Awesome work and keep it up brother!
@@Josh.Davidson Again my friend appreciate your time and effort in everything you have built including J-Runner I love the way you automated the Donor nand process. I used it on my recent dual nand build and it worked perfectly right down to patching the fcrt.bin so the drive would work properly.. Freakign awesome work. Thank you so much for keeping j runner up to date and polishing it the way you have done it is a testament. Awesome work brother.
Hello. What size of smd resistors did you use ? And do the resistor values have to be exact? For example: I find 39 ohm resistors, 43 ohm ones, but not 40.2 for R4R9 ; And I find 47 or 51 but no 49.9 for R5D2. Thanks.
I was digging for almost 2 hours for this as I knew I heard of this before. One question however, do you solder over a Jasper power connector? Or no such change needed?
@@Josh.Davidson I want to ask you something? may I? what difference in gpu betwen falcon 2008 02 year and falcon 2008 08 it has different code on chip? but when we swaped it 2 consoles goes to 0022 error?
@@Josh.Davidson Thank you Josh! after second time reflow with fux plus all started working. Will you create a tutorial for ps3 40nm conversion? or it secret information? And i have another question, i have a jasper 16mb. and its no video on av and on hdmi i already change hana psb gpu cpu no video, but install rgh 1.2 and it started led on chip stop blinking in different time but no video may be you have any idea? Thank you for answer, sorry for my english.
@@filippetrov79 Tutorial @ px place. You need to show RGH1.2 debug LED in order for me to tell you what might be problem. Why you change all parts? Don't just change parts randomly, you need to debug, WHICH part is the problem and change that. It's a bad idea to just change HANA PSB GPU CPU like that.
@@liptonacer No its not. There are no thermal issues on the 360. The heatsinks and fans are all fine. Anyone who says otherwise is an idiot and does not understand anything about chip thermals. The 360's died because the GPUs were defective and could not withstand normal thermal cycles. Even 20C room temperature to 50C is a thermal cycle. The only reason the extended heatsink exists is to delay the fans increasing in RPM a little bit due to people complaining that the fans were loud.
are the 80nm rhea gpu reliable is there anyway to tell or is it just luck as I herd that late falcon models are reliable but I want to know just by looking at the gpu die if you can work out if it's a later gpu.
I got a late falcon and I heard that overheating is usually the cause of rrod. I want to keep my 360 as long as possible, should I replace the thermal paste for future-proofing? It has never been replaced and it’s 16 years old.
That is nonsense. Overheating had nothing to do with it. If your system is a late Falcon, it should have a reliable GPU which is reliable like Jasper. If it is early, then replacing paste and such won't help. If everything is still working, then leave it alone.
There were 0 overheating issues on the Xbox 360. If it overheats, it shuts off long before damage can occur. Video on my channel about it called What happens if the Xbox 360 heatsink is removed? The heatsinks were changed for unrelated reasons.
No. And Falcon V1 and V2 do not exist. There is only Falcon. Initially Falcons were offered with 8 RAM chips, from Qimonda, Hynix or Samsung. Qimonda came out with 128MB RAM chips first, and MS who was still trying to sort out the RROD issues, decided to move to using only those chips, in 4 chip configuration. The result is that when the fixed GPUs started being used in mid 2008, they almost all have 4 RAM chips. This component vendor change does *NOT* constitute a different board version. The Jasper V1 has either 4 or 8 chips from different vendors in the exact same way. The Falcon V1/V2 myths are a result of people jumping to conclusions and not understanding. The boards were built by 3 different vendors who all prefer different parts for pricing reasons.
Josh, I have a 2008-04-12 Falcon whose GPU is, I assume, failing (vertical lines). Could I just replace the Rhea GPU instead of retrofitting and be, relatively speaking, good to go? TIA
It is a leftover TITAN connector, Titan was used for debugging Loki during its development similar to how Waternoose was, except no versions with 1BL injection.
@@Josh.Davidson ok thanks Josh i ve seen that video but its less detailed so I need to replay it more to understand. I want to try with one of my rrod official refurbished Xenon that contains with Benq DVD drive, the other one same I will replace the GPU with newer X817791
@@Josh.Davidson 👏 WOW Thank u for doing making this easy to realise, but I apologize for my new question. I just downgraded my jagged Xenon to 9199 with the Jrunner created firmware, when i flashed it with my USB stick in Xell and reboot,it booted up and I finished system set up at the first bootup. But the display suddenly get froze when i was opening the system settings' and I pressed the power button to turn it off, then it quickly shut not as usual like it usually has a delay ,then I want to open it up but it won't boot again, even xell. just with only greenlight,I disassembled it and successfully flashed 17559 with jr-p just then and still the same.I am confused now Is it possible the wrong of CPU? Another rgh1.2 Xenon got the same issue not quite long ago
@@Josh.Davidson Gpu's dont have keys for example. So I would say if the BGA layout is the same etc. Then I don't see why it shouldnt work, I didnt know the bootloader was tied to specefic gpu's
@@RedOverlord It because the CB does the HWINIT for memory, etc. The 5774 CB probably does not know how to deal with Y3 NB/GPU. That why it hung somewhere in CB. Can't see where because the updated CB does not have post.
@@RedOverlord I did another console with older CB (5771). It hangs at 0x2E 2BL_S_HWINIT. We can understand this, it does not understand this graphics. Placed proper CB and starts immediately.
Research and Repair. If you're not interested, then why'd you click? If your point was why did I take a GPU from a working Jasper, I didn't. This chip came from a console that was damaged by someone with bad soldering skills trying to RGH it. Also you can buy hundreds of GPU from China.
If you mean why did I take a GPU from a working Jasper, I didn't. This chip came from a console that was damaged by someone with bad soldering skills trying to RGH it. Also you can buy hundreds of GPU from China.
@@Josh.Davidson no longer a Falcon because it is running Jasper firmware hehe. I kind of understand why MS would not do this kind of thing even if it meant saving them money. They probably would not want their technicians understand too much about what was going on inside the boot stuff for security reasons. (Paranoia)
@@leonardoliveira I guess its a bit of a grey area. I'd still call it an upgraded Falcon as the only change was the CB to add support for this GPU. It is still technically a Falcon.
