Stratix IV GX kit: BoardTestSystem.exe fails "active version is not 9.1"

Davefrazer, could you provide the link to the update please?

(I found just that link:

ftp://ftp.altera.com/outgoing/devkit/91/arriaiigx_2agx125_fpga_v9.1.2.exe)

Meanwhile Quartus 10.1. is released. I can not switch back to 9.1 for using BTS.

Does anybody know if its possible to change the Quartus version numer (Environment variable or registry setting)?

Jens