* Tune it to fit your JTAG tool: adapt `CONFIG_IF` to refer to your JTAG tool. `openocd_configuration.sample` contains several examples and is set up by default to work with the J-Link.
* Wire the Proxmark3 to the JTAG tool. How to do it depends on the tool. See below for examples. **Warning:** don't plug the Proxmark3 on USB if the tool delivers already the voltage to the Proxmark3, which is most probably the case.
* Then just run
```
cd tools/jtag_openocd/
./openocd_flash_recovery.sh
```
In some rare situations, flashing the full image over JTAG may fail but the bootloader could be fixed. If it's the case, you can flash the image without JTAG by booting on your fresh bootloader (possibly forced by pressing the Proxmark3 button).
For advanced usages there are also `openocd_flash_dump.sh` for dumping the content of the Proxmark3 and `openocd_interactive.sh` for an OpenOCD console.
## RDV4 pinout
The RDV4 JTAG header is quite smaller compared to other Proxmark3 platforms.
If you're using a J-Link, there is a [convenient adapter](https://github.com/RfidResearchGroup/proxmark3/wiki/Tools#jtag-adapter) made by Proxgrind.
You can also make yours with some 1.27mm headers (look for `1.27mm header` on Aliexpress) or Pogo pins or buy an already made clip, e.g. search `dykb clamp` on Aliexpress and take a 1.27mm single-row 6P version.
There has been lots of articles and blogposts about recovering, debricking, JTAG your Proxmark3 and you find here below an assortiment of resources that will be of help.
