macbook pro a1502 main board is 820-4924-A but locked any body help thanks in advance
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Re: macbook 13inch retina a1502
Sorry i didn't see you already did upload ...ok here are the steps now password is gone no need to do anything else with your file just reflash it and follow my steps after you do so or the cloud will reset it again once you go online.
steps:Make sure to do this steps after reflash:
Resetting NVRAM
i) Shut down your Apple Mac.
ii) Locate the following keys on the keyboard: Command, Option, P, and R.
iii) Turn on your Mac.
iv) Press and hold the Command-Option-P-R keys immediately after you hear the startup sound.
v) Hold these keys until the computer restarts and you hear the startup sound for a second time.
vi) Release the keys.
And after that... reinstall the OS is a must to have no other problems.
Techman1025Comment
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Re: macbook 13inch retina a1502
Here
techman1025Comment
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Re: macbook 13inch retina a1502
thx a lot but this is 820-4924 i need 820-3662-AComment
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Re: macbook 13inch retina a1502
oooo sory sory i forget thx i wil check and let u knowComment
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Re: macbook 13inch retina a1502
thx a lot its work thx u so muchComment
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Hello everyone,
I’m currently working on a dead MSI GP75 Leopard (MS-17E71) motherboard (i7 CPU, NVIDIA GPU) with a no display/no backlight issue initially. After extensive investigation, I’m at a critical stage involving EC firmware, BIOS/ME region interaction, and possible deep corruption. I'm seeking advanced insight from anyone with experience in EC/BIOS sync issues or PCH-level behavior. Here’s a full breakdown:
🧩 Initial Issue- Board powers on (fans spin, keyboard lights up and can be adjusted, caps lock led lights), but no display or backlight
- External display (HDMI) shows
07-24-2025, 02:17 PM -
Hello everyone,
I am requesting urgent assistance to unbrick my laptop, a rebranded TongFang GK7MRFR chassis. The laptop is completely dead following a faulty in-OS EC flash attempt.
I have successfully used a CH341A programmer and can read/write/verify both flash chips, but using my backups/extractions has failed to restore power. The root cause is likely a corrupted Intel Management Engine (ME) region or an incompatible EC/BIOS pairing. System & Hardware Details- Barebone / Chassis: TongFang GK7MRFR
- MB: MB: GK5MP5X V1.0 Prod :GK5MRFV10T04201310281
- Rebrand: PC Specialist
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Apple MacBook Pro Retina 13' A1502 820-3536-A Schematic...10-12-2024, 11:43 AM
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Hello everyone,
I recently bought a non-working Asus Zenbook Pro Duo OLED UX8402ZA that was listed for parts only. The seller mentioned that it had no display output but that the charging lights worked.
When the laptop arrived (without a charger and SSD), I connected a charger and confirmed with a multimeter that it was charging the battery. However, when I tried to power it on, only the backlight of the secondary display came on. There was no image, and it didn’t boot into the BIOS.
I decided to try flashing a new BIOS, but since I didn’t want to desolder... -
First of all thanks to all of our members who have posted previously all methods posted here.
Please leave a comment if you find something new,or have anything else to add.
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