However, it is very likely you will need to solder the wire on the board. From the command prompt cd to your unzipped TJTAG’s windows directory and run tjtagv2.exe to get a list of options. To check your cable, run command tjtagv2.exe -probeonly. It will automatically detect the CPU type (see pic below for an example of LINKSYS WRT54GS). If not then check your cable. Put the spring loaded solderless pins on top of the JTAG pads, align the pins with the pads, make sure all 6 pins are connected to the corresponding pads. Если же нет — вы либо ничего не увидите (перепутан RX и TX; даже если вы подключили правильно — попробуйте поменять местами) либо увидите мусор (значит либо кабель плохой, либо перепутаны RX/TX/GND или другие контакты). Ещё нужно будет установить драйвера на этот USB кабель. You probably already heard of terms like, NVRAM, CFE, FLASH ect. So what are they? NVRAM NVRAM stands for nonvolatile RAM. It can hold its contents when the main power source is lost.
Click «Reboot.» In a moment, you will see «Command reboot completed.» The router will now start the reboot process. Cuz we bricked it many times, pogo pins to the serial pads would not do. I needed something I could connect to many times. You can now upgrade to any generic DD-WRT build except Mega and Micro. Be sure to always do a hard reset prior to flashing another build, do a power cycle followed by another hard reset after flashing, and NEVER re-use a configuration file from a previous build or another router.
Further, the TEW-632 firmware has an icon image of a D-Link router, although the image is not that of a DIR-615 indicating that the company behind both these routers has re-used code for other devices as well. Browse to the firmware you downloaded and click Upload. Do not touch anything. Download [TJTAG] program and unzip it to a temp directory on your harddrive. When it bricked, before I power cycled it the power light started flashing rapidly. The pin 1 of the cable can be identified by a little triangle on the black header.