A1502-820-4924-A BB
BIOSSchematic
3.8 MB · first posted in BIOS Archive
Get on TelegramWhat the file name tells us
| Brand | Apple |
|---|---|
| Model | Apple A1502 |
| Board | 820-4924 |
| Revision | A |
| Kind | BIOS, Schematic |
| Format | .rar |
| Archive size | 3.8 MB |
| First posted | 2020-11-08 |
| Channel | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics |
Parsed automatically from the file name and caption. Always compare the board number with the one printed on your board.
Same file in other posts
| Channel | Posted | Size | Link |
|---|---|---|---|
| BIOS Archive | 2020-11-08 | 3.8 MB | Open post |
| Schematics & Boardviews Archive | 2020-11-08 | 3.8 MB | Open post |
| Cyberlan Electronics | 2026-07-04 | 3.8 MB | Open post |
What this kind of file is for
A BIOS dump is a full image of the board's SPI flash chip. It is written back with an SPI programmer when the original firmware is corrupted, after a chip replacement, or to recover from a failed update. Read and save the original chip first: serial number, DMI data and the Intel ME / AMD PSP state differ between boards.
A schematic is the circuit diagram of the main board: power rails, power-up sequence, component values and net names. It is the reference for measuring voltages and tracing a fault.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .rar | RAR archive | 7-Zip or WinRAR |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Other files for 820-4924
FileSizeRevAddedSource
Schematic 820-4924 a a1502 PDF
Schematic.pdf
1.4 MB
A
Get on Telegram Schematics & Boardviews Archive +1 more
LB# 820 4924 Schematic diagram and ''Board View'' file
SchematicBoardview
5.6 MB
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Get on Telegram Cyberlan Electronics