What you are seeing is the UserDrive folder on the device when you are connected using Usb Mass storage mode. This should be all you need access to. You can create a Config folder in what you see there as the root and put an apps.json, config.js and/or other files that you want to reside on the device. There are samples of these files in the toolkit.
Just be aware that while your USB connection is active, the device cannot see the userdrive, so after you put something on the device, you will need to disconnect the USB cable before the device will see it. You will typically need to refresh the device to read the new files as well. You could either reboot or log out to do that. To log out you can hit the badge icon on the bottom left of the home screen and select "log out".
Thanks for your response, but you are not really answering my question about how I can run those apf files.
I got a reg file and ActiveSync is working fine now, but I still would like to know what I should do to run the apf files, maybe I need it in the future.
I downloaded a hotfix for the beeping issue after reboot and I need full access to install the hotfix.
So I do need more access then just the UserDrive ;-)
p.s. your support site is really unstable, gives a lot of 404 errors when searching or opening pages. Your link was also not working first, and now 30 minutes later it does work
for run the apf file, you can use MSP.
Because with this application and this files you can create a barcode which will then be read with SB1.
For read with SB1 you can use RD Client.
I have activated the connection ActiveSync on the my SB1 using the 'ActiveSyncEnable.apf' file.