DRAM test failed

Hiya all,

after having changed some network parameters DigiConnect ME was not reachable anymore. No way to get connected. So I pulled down pin 18, reset Digi, and entered command monitor. There is an option to execute a hardware test.
DRAM test failed !! (see screen shot below)

Does anyone has experience with that?
Is the module really physically broken? And if so, what could have caused the damage? This is the second module that crashed !

               Continuous mode currently Off

Enter choice (ESC to exit-Hardware Diagnostic Tests)[12] :1
* Testing DRAM Failed. retCode = 3368803