BR-6204Wg

Processor: REALTEK RTL-8186
Flash:
1x 2M MX-29LV160
RAM:
2x 8M PSC
PHY:
REALTEK RTL-8305SC
Wireless:
REALTEK RTL-8225


EDIMAX BR-6204Wg disassembled ;)

Board image

Serial port header:
pin functions (beginning capacitor side):
1
+3.3Vcc
2
RxD (data TO Rtl-8186)
3
GND
4
TxD (data FROM Rtl-8166)

Serial setup: 38400, 8, N, 1.
At user/password prompt (from original firmware) working combination is: super/@gogolinux (as stated in linux-mips wiki).

Serial port header

Wireless module uncovered:

Wireless module uncovered


This is probably JTAG connection, at least as found with ohmometer and RTL's datasheet.
Upper row: connections, lower row: GND.Pin connections counting from Flash chip:
Pin number
RTL 8186 pin number
JTAG function
1
188
ext RESET
2


3
8
TMS
4
116 thru 33ohm
TDO
5
33
TDI
6
146
TRSTN

JTAG header

Router back in it's case, but this time with RS-232C connector added.

 Back in case