Reverse engineering a Belkin N150 Wireless Router model F9K1001V4
- Remove the board from the case, the first screw is under the sticker on the bottom.
- Near the Broadcome MCU, you'll find 4 test points at J3 (TP106) - See image
- Using a multimeter, check voltages and resistance against GND and VCC to determine pinout, see chart below.
- solder a 4 (or 3) pin connector strip through the holes or onto the pads. - see image
- Connect a serial port adapter (FTDI FT232RL) at 3.3V. GND to GND, cross Tx to Rx and Rx to Tx, 4th pin unused.
- Start a terminal emulator (PuTTY) on the appropriate serial port of your PC at 115,200 baud rate. Enable logging printable output.
- Boot the device, allow the bootup log to finish to retrieve information about the device. See log
- Power device off and on and press space key when you see
Press space bar to cancel startup...to access shell prompt.
with ethernet ports on the left, point 1 is on the left and 4 is on the far right
| TP | V | Ω GND | Ω VCC | Notes |
|---|---|---|---|---|
| 1 | 0 | GND | ||
| 2 | 3.3 | |||
| 3 | 3.3 | |||
| 4 | 3.3 | unused |
Microprocessor: Broadcom BCM5356C0KFBG