interface ftdi ftdi_vid_pid 0x0403 0x6010 transport select jtag adapter speed 1000 jtag newtap yourcpu cpu -irlen 5 -ircapture 0x1 -irmask 0x1f Note: You must create or find a specific config file for your board. Generic MIPS configs often fail; this is where UrJTAG wins out. For the hobbyist community repairing routers (Asus, Linksys, Netgear), the closed-source Broadcom EJTAG Flash Tool (often just called tjtagv3.exe or brjtag.exe ) remains a top contender. This is a Windows-native tool designed explicitly for routers with Broadcom chips.
UrJTAG is command-line only. It has a steep learning curve but offers surgical precision. 2. OpenOCD (Open On-Chip Debugger) While OpenOCD is famous for ARM chips, its recent builds (post-version 0.11) have significantly improved EJTAG support. For developers who want both debugging and programming, OpenOCD rivals UrJTAG. ejtag tiny tools software top
| Software | Write Speed (1MB) | CPU Reset Handling | GDB Debug | Ease of Use | | :--- | :--- | :--- | :--- | :--- | | | 12 KB/sec | Excellent | No | Medium | | OpenOCD | 8 KB/sec | Very Good | Yes | Hard | | BrJTag (Windows) | 15 KB/sec | Fair (requires -nocwd) | No | Easy | | Eclipse + OpenOCD | 8 KB/sec | Good | Yes | Medium (GUI) | This is a Windows-native tool designed explicitly for
Furthermore, integration scripts are becoming popular, allowing the EJTAG Tiny to automatically discover pinouts on undocumented boards. Conclusion The EJTAG Tiny Tools Software Top is not a single application but a curated ecosystem. For raw recovery of bricked routers, BrJTag (Windows) or UrJTAG (Linux) remains king. For professional debugging and development, OpenOCD with GDB is unmatched. Master these tools
Remember: The hardware is just a $15 dongle. The software is what separates a hobbyist from an embedded systems expert. Master these tools, and you can resurrect any MIPS device from the dead.
jtag> cable ejtag_tiny jtag> detect If you see MIPS 24Kc or Broadcom BCM63xx , you are connected.