Motorola XTS2500 Unable to Keyload

[commoner]

I have two XTS2500s, both showing AES-256 when placed in Service Mode. I successfully loaded AES keys onto one radio with a KFDShield, but I cannot load keys onto the other. I opened up the housing for the second radio to do a cursory inspection, but I didn’t see anything obviously wrong. Radio still functions as expected after reassembly.

1. Both radios contain Multikey in their flash codes.
2. Both radios have hardware encryption checked under Secure in CPS.
3. Both radios have the same number of CKRs in CPS.

Can anyone point me in the right direction?

 

[K2NEC]

Does the radio show KEYLOAD at all? If not, it might be a problem with the contacts on the side. Ensure they are clean and undamaged

 

[commoner]

Both radios do show KEYLOADING when connected.

 

[commoner]

I swapped housings, keypads, and LCDs between two XTS2500s, and now both keyload successfully. If I had to venture a guess as to the root cause, it could have been a ribbon cable not being fully inserted somewhere. There is no evident hardware failure in either radio.

 

[MTS2000des]

The worst design of integrating a UCM into a front cover that is subjected to constant physical stress of the operator and environment goes to Motorola. The XTS2500 was a cost cutter radio and this is where it shows.

 

[N4DES]

Are both CKR and PID Key Management checked in MultiKey Option tabs?

 

[commoner]

Yes, they are both checked in CPS.

 

[Echo4Thirty]

The worst design of integrating a UCM into a front cover that is subjected to constant physical stress of the operator and environment goes to Motorola. The XTS2500 was a cost cutter radio and this is where it shows.

It has always been my thought that they never designed the radio for usage as a primary public safety radio that needed any encryption higher than software ADP. Seems the small size got popular over the 5000 and they had to figure out a way to retrofit it and that's what they came up with. The whole design of the radios internals screams general government/public works tier radio. If I had a dollar for every time I had to reflow an antenna connector, well I wouldn't have to reflow antenna connectors anymore

 

[saberthree]

Are both CKR and PID Key Management checked in MultiKey Option tabs?

I thought on the KFD it doesnt work with PID key management?