MP 1,1-5,1 Mac Pro 5,1 no chime/no boot after CPU upgrade...

[Sample]

thanks again, you saved my Mac🙂

 

[tsialex]

thanks again, you saved my Mac🙂

Next step is to remove the hybrid MP4,1>5,1 BootROM. The cross-flashing method is prone to bricking since the BootROM is an hybrid of MP4,1 and MP5,1 - only the EFI is upgraded, all the rest is still MP4,1.

 

[Sample]

Oh I didn't know that.. is there a link to a page that I can study in order to achieve this? Will I loose the possibility of running older OSs?

 

[tsialex]

Oh I didn't know that.. is there a link to a page that I can use in order to achieve this? Will I loose the possibility of running older OSs?

I'll send you a PM. You already lost Leopard, a MP5,1 firmware can't boot anything earlier than a special build of 10.6.4.

 

[Sample]

Ok thanks! I just need to use Mountain Lion and Mojave...

 

[tsialex]

Btw, do you have the full photo of the socket with the bent pin? It's socket A or B?

I'm curious to know what CPU signal is there.

 

[Sample]

you mean a picture with the full socket visible from above? or another magnified pic of the bent socket from another angle?

 

[tsialex]

you mean a picture with the full socket visible from above? or another magnified pic of the bent socket from another angle?

Yes, the full socket. It's a matrix, from the position of the pin I can find the signal that is using that pin on the documentation.

It's socket A or B?

 

[Sample]

Sure tsialex! It's socket B, give me a few minutes🙂

 

[Sample]

Here it is, bend in pin is less visible from this angle, arrow head is pointing at bent pin head, not pin seat: