- Joined
- Mar 8, 2005
- Messages
- 4,712
- Reaction score
- 20
- Points
- 38
- My Satellite Setup
- TM Nano ~ sg2100
- My Location
- Midlands
In case this got missed within the other thread, here are a bootloader and JTAG diagrams that you may find useful if you have a clone and Gemini 4.31.
You can download a bootloader here:
_http://rapidshare.com/files/87512303/dreamboxbootloader.rar.html
PCB pins:
Signal Pin Pin Signal
TDO 1 2 N/C
TDI 3 4 TRST
N/C 5 6 VCCS
TCK 7 8 N/C
TMS 9 10 N/C
HALT 11 12 N/C
N/C 13 14 ***
N/C 15 16 GND
db25 . . decoder
The cable (DB25 = printer port connector):
DB25 > resistor > PCB pin
2 --> 100 ohms --> 11 ( Halt)
3 --> 100 ohms --> 9 ( Tms )
4 --> 100 ohms --> 7 ( Tck )
5 --> 100 ohms --> 3 ( Tdi )
11 --> 100 ohms --> 1 ( Tdo )
25 ------------------ 16 ( Ground)
You may also be able to use a CAS2 or CAS3 to jtag it. Use at your own risk.
I haven't tested it and you should contact your seller to obtain a refund if possible.
Updated 21.04.08:
These files have been tested by philip633
_http://rapidshare.com/files/109184199/bootloader.rar.html
JTAG program
BIN file
MAC generator
See here for more details:
http://www.satellites.co.uk/satelli...eambox-500-jtag-information-3.html#post736304
You can download a bootloader here:
_http://rapidshare.com/files/87512303/dreamboxbootloader.rar.html
PCB pins:
Signal Pin Pin Signal
TDO 1 2 N/C
TDI 3 4 TRST
N/C 5 6 VCCS
TCK 7 8 N/C
TMS 9 10 N/C
HALT 11 12 N/C
N/C 13 14 ***
N/C 15 16 GND
db25 . . decoder
The cable (DB25 = printer port connector):
DB25 > resistor > PCB pin
2 --> 100 ohms --> 11 ( Halt)
3 --> 100 ohms --> 9 ( Tms )
4 --> 100 ohms --> 7 ( Tck )
5 --> 100 ohms --> 3 ( Tdi )
11 --> 100 ohms --> 1 ( Tdo )
25 ------------------ 16 ( Ground)
You may also be able to use a CAS2 or CAS3 to jtag it. Use at your own risk.
I haven't tested it and you should contact your seller to obtain a refund if possible.
Updated 21.04.08:
These files have been tested by philip633
_http://rapidshare.com/files/109184199/bootloader.rar.html
JTAG program
BIN file
MAC generator
See here for more details:
http://www.satellites.co.uk/satelli...eambox-500-jtag-information-3.html#post736304