Hello, can somebody clear for me A1534 efi locked dump? Thanks a lot
-
-
Re: Macbook A1534 2016 EFI LOCK
Try and report back
-
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
-
Re: Macbook A1534 2016 EFI LOCK
Thank You for sharingComment
-
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
-
Comment
-
Help, please clean the ME region of the A1534 2017 board 820-00687-b and change the serial number. If not, please use a clean, functional BIOS.
New Serial C02XN1EKHH21Comment
-
I got ME Clean tested successfully, with serial 0000000 so that whoever needs it can use it.Attached FilesComment
-
-
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... -
I will just preface all this by saying that I have a fairly technical background but have never attempted SMD electronics diagnostics and repair before, I really like the idea and want to learn.
I have a MacBook Pro late 2016 that died maybe four years ago. Over the course of 30 seconds, it got slower and stuttered, until it froze for a second and died. No click from the trackpad anymore, nothing. I started getting interested in electronics repair and decided to give it a shot, so I opened it, removed the battery (one cell was puffy), took out the motherboard and experimented with...10-15-2025, 01:53 AM
Comment