PGP: 51F5 CC26 A523 96FC

3 April 2019

Upcoming Firmware Flasher for 2011 MacBook gMux

by Chad Baxter

The Plan

After a long while I am prou​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​d to announce that DosLab Electronics will be creating an even simpler solution to the problem we have already solved with MuxHat. This involves flashing a custom firmware we designed onto the gmux IC of an Early-Late 2011 15” or 17” MacBook Pro. This is done in a simple manner via the gMux JTAG header on the logic board. We are currently figuring out how to offer this as a mail-in servic​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​e. Stay tuned for more info on that. We are also investigating allowing users and technicians to do the flash themselves. This will require anyone who wishes to flash their own gMux to collect the following software and hardware.

The software and licensing s​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​ystem are currently in development. We do not have a date for completion, but we are hoping around early May of this year.

Why licensing!? I hear you scream. Why can’t we just download the firmware?

I am a major propone​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​nt of open source software. That being said this project is different for two reasons. One, we’ve already put countless hours into this part of the project. And two, we will almost completely lose MuxHat sales once this is released. MuxHat will remain on sale and still be a cheaper option. From the start of this leg of the project we realized to maintain sales figures w​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​e would have to offer a mail-in service or create a licensing option. Our current price points (which may change) are going to be something like this:

This setup is specifically designed for individuals who wish to flash multiple gMux ICs in a repetitive fashion. This is for repair shop own​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​ers, small businesses, and people with more Mac than they know what to do with. That being said you can still purchase this software and use it once.


We were tired of seeing rip-me-off Vietnamese shops enticing device owners to ship their devices to Vietnam for a similar but broken reprogrammed gMux fix. To ad​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​d insult to injury, they charge astronomical fees for this service. We are happy to say that we will be undercutting these prices by 85-90. Yes, that much cheaper.

Scam alert!

PS3Specialist aka Reballing Genius, LLC. is a fraud and a scam.

Before foll​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​owing any links posted below watch the video in the iframe and decide if you really want to give these scammers your views.

We have recently become aware of a service that is offering “reballing” as a fix for dedicated graphics failures. They claim DUST getting “under the chip” is ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​the cause of the failure. How DUST can affect SOLID METAL connections like those found between BGA chips and their host WE DON’T KNOW. And neither do these guys(lol). The owner of the sh​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​op recently harassed dosdude1 on Facebook. This community should not put up with these kinds of scams. Please if you ever notice anyone considering services from this “company” point the​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​m in the direction of a real professional, not some idiot with a hot plate, magnifying glass, and electric drill.

An informational video on why reballing n​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​ever fixes the true problem:


tags: firmware - gmux - 2011 - MacBook Pro