Search results

Thank you very much!

It's an 820-01236-A Thanks

Hello, I have ordered a replacement board on ebay for an iMac 27" 2019 and got apparently an Apple replacement board with no SN. I went to flash the original serial using the blank board serializer and all that worked fine. However once I started updating the OS I was prompted by a firmware...

I have that machine which looks clean. Trackpad works but keyboard doesn't. I've inspected the internals and trackpad as well as cables connectors look fine. A few spots on the cable where tiny stones or debris have left marks so thinking it's worth trying swapping that cable first but I don't...

I have a donor board, same model, same NANDs configuration. I have read conflicting theories about how to prepare the NANDs. I have the P13 NAND programmer. Can I just transplant the NANDs and use Configurator to wipe the content or do I have to use the P13 programmer (which doesn't seem to...

Yes I did try with different charger. DFU will fail during installation (failing during transition state)

Well it did start but booted right away to the "go to apple support page for restore" Charger gave me 20V and it was starting to charge the battery. Then I've switched it off, unplugged charger. After that It wouldn't start up and charger did its thing again, cycling at 5V. After a while, it...

I have that machine that came in, dead, with the trackpad clicking. Customer mentioned that the machine switched off while being used. Upon visual inspection, nothing appeared out of ordinary. Plugged the board alone to USB-C and both ports would cycle at 5V, from 0.14A to 0.3A then charger...

PPBUS_G3H is definitely fluctuating. When ampmeter is on, it seats at 12.3V and then shuts. However when the ampmeter measures 5V 0.5A, PPBUS is at 8V slowing raising up. PP3V3_G3H_RTC is definitely not stable, even when the ampmeter is on. Well I guess the CPU is toast: L7821 and L7822...

Hi, I have that board that was previously worked on. Customer told me the laptop did shut off while working, battery was charged or at least partially charged. When I got the board, the amp meter was showing nothing. Upon inspection the USB-C area was reworked as well as the as the U7000 area...

Yeah, checking with the measurements I find on Flexboardview, Pin 3 is off compared to the rest. I guess that one will become a MacMini. Thanks for your help.

Pin3 seems off. Is it what I think it is, a bad CPU like on the 820-00923/820-00239?!

JP600 Diode mode measurements: Pin1: 0.26 Pin2: 0.545 Pin3: 0.565 Pin4: 0.535 Pin5: 0 Pin6: 0.31 Pin7: 0.3 Pin8: 0 Pin9: 0.295 Pin10: 0.31 Pin11: 0 Pin12: 0.31 Pin13: 0.295 Pin14: 0.3 Pin15: 0.295 Pin16: 0.31 Pin17: 0 Pin18: 0 Pin19: 0.31 Pin20: 0.58 Pin21: 0.295 Pin22: 0.58 Pin23: 0 Pin24: 0.51...

Hello, I have this board which my personal board used for test and I screw it up while testing a display not fully assembled in the case. I saw a spark near the CD3217 if I recall well and that was it. Now I can tell I have the 5V and 3.3V lines to power the screen and also, when the screen is...

Ok it worked. Thank you a bunch! Actually if I understand what you did, you simply added the ME region which is smaller in size (1.2MB) than the one originally in the Bios dump (1.7MB) in the decomp folder of the FIT software right? There was no need to do that cse_image_fwu_base.bin file. I...

Hi 2informaticos, No worries at all. I am actually very sorry to hear that you are in the hospital. I hope you are fine. Thank you for doing it.

820-01236-06

Hi, If you are back and can help with it, please do. I am getting lost with these new ME/PMC stuff and Piernov's video is obsolete with the newer chipsets. I've followed the guide on WinRaid for CSME v12 and had an cse_image_fwu_base.bin but I don't know what to do with it. I understand you...

The iMac model is iMac19,1 but I can't find it in https://github.com/gdbinit/firmware_vault/tree/master/EFI/iMac Any idea where I could get a clean ME region for this iMac model please?

Well enjoy your holidays then! ;-) The shop said they have put back the original Bios dump. If you are busy and can't do it, maybe you can point me a link which explains how to do it?