Reply To: Anyone want to dump their programmed L336 remote flash chip? (raspberry pi)

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April 20, 2017 at 5:25 AM #12503
Quantumcross
Participant

    OK sorry for the delay in these instructions.

    1. Remove remote batteries
    2. Use some kind of spudger or plastic tool to go around the edge and open the remote (all plastic clips, careful not to break them)
    3. There are 2 chips, locate the flash, it should be a 24C16N (If it’s not a 16 we can probably still dump it just different command)
    4. Take your pi, turn on the i2c bus in sudo rasbpi-config, reboot.
    5. Get the i2c tools: sudo apt-get install i2c-tools
    6. Pinout is:
      • 4 – GND
      • 5 – SDA
      • 6 – SCL
      • 8 VCC
    7. Hook up 4 wires to pi with a clip or by solder
    8. pi pinout: https://pinout.xyz/
    9. pin 1 is 3.3V, pin 3 is SDA, pin 5 is SCL, pin 6 is GND on pi
    10. run sudo i2cdetect -y 0, you should see addresses 50 through 57 light up in the output.
    11. dump the flash: for i in 50 51 52 53 54 55 56 57; do sudo ./eeprog /dev/i2c-0 0x$i -r 0:256 -f -o 0x$i-2.bin; done
    12. zip up all the 0x5*.bin files, upload em somewhere, and I’ll let you know if it works!

    Edit: Here’s a datasheet: http://pdf1.alldatasheet.com/datasheet-pdf/view/175224/ATMEL/AT24C16N-10SA-2.7C.html