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Require a BIOS fix for an 820-00163 which exhibited no response/activity other than to show blinking folder when all devices (and USB) are removed.
Testing with a donor board BIOS restored functionality.
Original (corrupted?) and donor BIOS images included in the zip file located at...
Have a Macmini 2014 model (with the beloved T6 security torx), comes up with a 6-digit pin lock with Apple logo.
This unit is from an e-waste recycling centre that I normally do a lot of work for, so I'm assuming valid ownership.
I've cloned the 64MBit chip that's on the top side of the PCB...
Normally the process I've used is as follows;
1) remove bios from board
2) copy bios to bin image using TL866CS reader (via windows or linux)
3) copy clean ME region file for the board to a new file
4) modify new file with sections of the old bios (ie, starting from the "ssn" string)
Have I missed something here or is this perhaps a response to the wrong thread?
In the past, I've just flashed a spare chip with the new/fixed image, soldered back on to the board and that was it (using the TL866CS).
Previously Duke has recommended that I just post the serial number of the machine and he can generate a suitable BIOS Image file; is this still applicable?
BIOS image available at http://dxp.me/820-00165-3893-20190605.zip
Latest beta versions are now in public release.
A good number of improvements over the existing stable,including the following;
* Butterfly view mode (can be turned off too)
* Faster rendering, maintain 60fps easily without chewing your CPU to death
* PDF search system greatly improved, with...
Not the first time I've had this symptom on 820-3437 ( testing with 85W genuine MS2 ). To date I think I have 3 boards in the "unsolved" box all exhibiting this.
Instead of the fan doing the on/off/on/off... on-and-run sequence, the behaviour instead is to run the fan continuously for the about...