If your network relies on the rugged, high-performance Mimosa C5c, version 2.8.1 is a mandatory upgrade. The memory leak fix alone justifies the update cycle, preventing midnight outages that frustrate customers and support teams. The enhanced spectrum analyzer and security patches are valuable cherries on top.
For those running a Mimosa A5c or A5c connectorized sector with C5c clients, 2.8.1 tightens the GPS sync window. I had one tower where a C5c would occasionally drift out of the Tx/Rx timing slot under heavy rain fade. After the upgrade, that unit held sync perfectly through two thunderstorms. Mimosa C5c Firmware 2.8.1 Download