Converting St Link V2 to J‐LInk

Warning

Warning! This is a work in progress!

Converting a generic St Link V2 to Jlink

In some instances your generic St Link V2 will not be recognized by Keil or pyocd. In this situation we can use a utility by J-Link, and convert the St Link V2 to J-Link. In my case my generic St Link V2 came with a Geehy APM332FEPSCBT6, which wasn't recognized by pyocd or keil.

1. Download STLinkReflash (Version 190812 tested)
2. In order to convert the generic st link v2, we must modify the following offsets in STLinkReflash.exe *I used a piece of software called HxD to modify the offsets on my exe file.

Line	From	To
2566	3C	38
2567	40	C0
26B2	3C	38
26B3	4A	C0

Or simply just download the Pre-modified version

3. Run STLinkReflash.exe and accept, selecting option 1.
4. Once you have your device converted to J-Link you will likely need to install the driver.
   • It can be found in your J-Link folder C:\Program Files\SEGGER\JLink\USBDriver)
   • Double clicking InstDrivers.exe
5. Now in pyocd you should be able to run pyocd list and get result.

Credit to jamesyOung