So to clarify, there shouldn’t be any BIOS/SMBIOS/EFI issues if a reflow is performed on the discrete GPU, right?

piernov - Assuming I do the reflow successfully... are there any reasons why the logic board might become "bricked" or unusable after? Searching these forums, I see a lot of posts about serial number issues (?). What are those about?...

Congrats on post 1000! I feel honored 🙂



1. How would a reflow render my device unusable? In what ways can a logic board become unusable after a reflow?

2. But I thought the Bumpgate chips were just... faulty chips. How would a reflow "bring an improvement" to a faulty chip? I don't think my Nvidia Geforce 650M falls under the Bumpgate thing. The 650M was made in 2012. The 650M isn't the problem, it's the way Apple soldered on the chip (cheaply). This issue with GPU chips in Apple MBP's around this time was it's own big deal like...

How do I find my "board path" as shown on [URL="https://openboarddata.org/"]openboarddata.org[/URL] ?

Full model: Mid-2012 Macbook Pro 15" Retina A1398 (EMC 2512) MC975LL/AHow do I find my "board path" as shown on [URL="https://openboarddata.org/"]openboarddata.org[/URL] ?

Full model: Mid-2012 Macbook Pro 15" Retina A1398 (EMC 2512) MC975LL/AHow do I find my "board path" as shown on [URL="https://openboarddata.org/"]openboarddata.org[/URL] ?

Full model: Mid-2012 Macbook Pro 15" Retina

Hi everyone! I'm trying to fix my black screen / failed U8900 GPU v-core on my Mid-2012 Macbook Pro 15" Retinaby doing a rework/reflow of the chip (once I determine that's the real issue; but it likely is).

I've been disabling the GPU in NVRAM for a few years... but it's just time for a better solution.

I'm new to soldering but the only feasible way to fix this issue is to do something myself.

[U][B]MY QUESTION[/B][/U]:
I've been seeing some people (on this forum mostly) run into issues with the logic board needing a serial number or it being deactivated...

Hi just trying to fix my black screen / failed U8900 GPU vcore on my Mid-2012 MBP 15" retina by doing a reflow of the chip (if that's the real issue)