Mac mini mid 2010 bios update3/5/2023 ![]() ![]() (suspecting that chip may got failure due to power off whlie updating firmware or any hardware problem?) need help. Do not disconnect power, shut down, or restart the computer during the update or you will need to start the restoration process again beginning with step 6. The progress bar indicates the firmware is being updated. Catalina is working fantastically though. I did try to upgrade the GPU but Im guessing the one I bought is borked because I couldnt get it the iMac to boot with it installed, even after I flashed the correct BIOS. A long tone is played once the recovery process has started.Ī progress bar appears beneath an Apple logo on a gray screen. Tried to Monterey but it was too buggy without upgrading the GPU. Insert the Firmware Restoration CD while the lights are blinking or tones sounding, then release the Power button. On Macs that use a tray-load optical drive, the tray will open to allow the Restoration CD to be inserted. Hold down the power button until you hear 3 long tones, then 3 short tones, then 3 long tones. On Macs that don't have a sleep LED, tones are used instead. The sleep LED will blink rapidly, then slowly, then rapidly (3 quick blinks, 3 slow blinks, 3 quick blinks). ![]() Turn on the computer and continue holding the Power button. At last taken out the CD manually, when I switch on Macmini inserted the Firmware Restoration CD, only light glows nothing happens, Pressed button C to boot with CD & I tried the steps provided below but no luck ![]()
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