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thaGH05T wrote: It is a QFN fast.flow, but still sucks. i think there have to be a group of pads or a port that connects to it because apple has to do ISP and tests. If for some odd reason there is not I can assume that we could look for an alternate custom solution with a 3d printed clip.
They are not to bad to solder..but i don't see any available for purchase preprogrammed on ebay.
The picture attached shows a 2015 model with a SOP 8-Pin BIOS but think they have changed it to a 8 pin QFN...if you look above it programming port solder pads with missing port. ?
thaGH05T wrote: I have not laid eyes on a 5k, but I would look at the trace and see if it leads back to a larger component you may be able to solder to.
thaGH05T wrote: If you have the knowledge of creating and hooking efi programs and loading them as an option ROM go ahead I cannot do that yet. AFAIK they have always done ISP when it comes to a few chips. They may have changed that up though. Also, please do post the test point pinout etc.
ggltech wrote: Should be easy .
Hold your hot air gun about 2-3 inches away from the board ..in circular motion gradually use it to warm the board up around the chip..should take about 1min.
Now move closer 1/2 inch and apply heat only to chip.. Warning : make sure you are not blowing to much air or small components will blow away !
Use tweezers and touch it to see if it moves ..and lift off.
sometimes I add flux just before the lift.
Good luck !
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