Posted: Thu Mar 10, 2016 18:33 Post subject: Jtag ?
I recently purchased on ebay a Netgear WNDR3800CH router, and then I find out on the wiki that the router cannot be upgraded to DDWRT without some hardware interfacing :
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WNDR3800CH Flashing
1.Disassemble router and connect a serial port adapter to J1 connector
2.Establish serial/terminal session at 115200,8,N to serial port
3.Apply power to router.
4.Interrupt U-Boot on the serial console by repeatedly pressing ENTER
5.Reset board model ID using board_model_id_set WNDR3800
6.Reboot router
7.Web load Netgear v1.0.0.16 firmware
8.Web load wndr3800-factory.img firmware
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Now, is this what is referred to as a "JTAG" interface ? If so, can one of these JTAG cables be purchased commercially, and if not ---- can someone point me in the direction on how to fabricate one of my own (pinouts, circuit diagrams, ext) ?
I would appreciate the help, I think this router would be far better than what I have now (Linksys E3000)