Currently Being ModeratedFeb 22, 2013 9:17 AM (in response to Neo42opiöJGLKAG)
Yes, revert back to version 7.6.1. I think this is possible in v6 by Option-clicking the version number and then you will be able to revert the firmware. In version 5.6 just go to Base Station>Upload Firmware.
Currently Being ModeratedFeb 23, 2013 3:24 AM (in response to edex67)
When I click on the Version just the number of the Version changes to another. Normally it is 7.6.3, after the click it's 76300.7. I already looked through all the options in the Airport program but I can't find anything which allows me to change the software.
Currently Being ModeratedFeb 23, 2013 4:01 AM (in response to Neo42opiöJGLKAG)
OK, try downloading and installing AirPort Utility 5.6 following this guide:
Then, use the version 5.6 method stated above.