Hello, can somebody clear for me A1534 efi locked dump? Thanks a lot
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Re: Macbook A1534 2016 EFI LOCK
Try and report back
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Re: Macbook A1534 2016 EFI LOCK
If it's powering on but no display try to reset nvram
Shut down your Mac, then turn it on and immediately press and hold these four keys together: Option, Command, P, and R. You can release the keys after about 20 seconds, during which your Mac might appear to restart.Comment
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Re: Macbook A1534 2016 EFI LOCK
Thank You for sharingComment
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hello
i have an issue with a a1534 EMC2746
i have an issue trying to erase the bios and i get an error memory null ...but the bios its efi locked i can read it ... but i cant modify the bios there is anyone that can help meComment
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Hi everyone!
I have a 2018 MacBook Pro (with Sequoia OS) that I've been using for years with no problem. I recently received an M2 MacBook Pro so I'm mostly using it and not the 2018 one, but since a friend of mine needs a computer, I thought I could restore my 2018 and give it brand-new-like to my friend.
I tried using the built-in tool to restore the MacBook (Settings > General > Transfer or restore > Delete) but it got stuck when trying to remove the Find Device configuration (it asked me for the password for my old Apple ID -now I use the same account but...06-27-2025, 08:54 AM -
Hello !
I have an issue with my Macbook A1534 early 2016
Core m3 (M3-6Y30)
1,1 GHz, 8Gb, 256 Gb
Backlight issue : at power on, the LCD screen is 100% white, when I turn the LCD panel some glitches appear, sometimes (around 45°) the LCD is coming back to normal, but very few times.
I replaced the flexible cable LVDS ==> no effect, still same issue
it seems the board is 820-00244 (to be confirmed ?)
I have attached the schematics for 820-00244.
Can you help me in troubleshooting this issue ? is it... -
The laptop is Apple Macbook A1534 2017 with board 820-00687-А. The USB-C tester shows no voltage, there is 820-00244-А board available. I looked at both schematics, all connector signals seem to be the same. Did someone try to fit 820-00244-А board in A1534 2017?05-11-2025, 01:08 AM -
Hi All,
i got one Macbook a1534 boardnumber 820-00244 that is taking only 5V 0,2A
I've tried to replace 3x CD3215B01 chip but it's still behaving same ....
On the board there was blown L4804 so i've replaced it.
when power is connected 5V 0,2A
PPBUS_G3H - 0V
PP20V_USBC_XA_VBUS_F - 5V
I've tried to remove F7040 as mentioned here
https://www.badcaps.net/forum/troubl...1534-820-00244
but there is... -
Hello,
This special tool from Apple is used to recover data from Macbook A1706. I've been using it for a while but it stops working. When connecting Thunderbolt 3 between the tool and working Macbook, Macbook should prompt "new device detected, allow or not"... but it doesn't.
Has anyone ever experience this ? It's not a cabling or power supply issue, some IC have stopped working but not sure which one. Probably the one that manager thunderbolt 3
Thanks
Claude...
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