After using ULINK2 with a high version of Keil, it cannot be used with a lower version due to hardware upgrades in ULINK2 by the Keil software. If you want to continue using ULINK2 with a lower version of Keil, you just need to initialize ULINK2. The specific steps are as follows:
1. Insert the ULINK2 debugger into the computer, find the UL2_Configure.exe program in the Keil installation files, and place it in the root directory of the C drive.
After finding UL2_Configure.exe, place it in the root directory of the C drive.
2. Go to the root directory of the C drive and find the file.
Return to the root directory.
Find UL2_Configure.exe.
3. After finding and opening the file, as shown in the picture, select B0. After the upgrade is completed, simply unplug and plug it back in.
