Jlink 6.12 back to 5.12G

After uninstall 6.12 by tool, open win10 regedit(start+r).

HKEY_USERS find SEGGER->J-Link
Change CurrentVersion and InstallPath to V512f's value.

HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\SEGGER\J-Link
Also change CurrentVersion and Install path to V512f.