Hacking Cisco Linksys EA2700

Step 1: taking apart
Note there are three screws to take off.

Step 2: Hook up UART Serial debugger

Step 3:
screen /dev/ttyUSB0 115200


ref:
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=276769&sid=6a27f6c98e93a870f25587ca2236a2f3
https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=989071&sid=48bddfccb6ab58c28bb44fc91b9b9ca7
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=51486
https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=773996