Hacking Problem with Passkey2

[Knolli]

Hello,
today i get my M3 with the Passkey2.
The M3 works perfect, but if i want to flash my DSlite (white, JAP-version) it doesn't work.

These are my steps:
1.) Turning on DS and starting GBA-Mode
2.) Loading K2_HW04.gba
3.) The following screen appears:
NDS Passkey2 Hardware Loader
Ver4.0 (322)

Please inseart programming adapter and Passkey2 into GBA slot

[select] - confirm

4.) Then remove the M3 out of the GBA-Slot and put the programming adapter with the Passkey2 on it into the GBA-Slot.
5.) I press select
6.) Then the following screen appears:
Unable to perform programming.
Please Check the connection of Adapter and Passkey2

Whats wrong with this? =/
And what can i do?

I pray for help T_T

PS: The switch on the backside of the Passkey2 is set on Passkey2, of course.