TO ALL USERS
PLEASE READ:
Only update your model to the Version 5.1 Service Update 1.1 release if your PIMG HW can support it - which can be determined by the serial number. Specifically the PIMG hardware can support the upgrade if it's serial number is greater than or equal to the serial number listed below for the given PIMG model type:

• PIMG80PBXDNI / DMG1008DNIW = IP006669
• PIMG80MTLPBXDNI / DMG1008MTLDNIW = IP006957
• PIMG80RLMPBXDNI / DMG1008RLMDNIW = IP006957
• PIMG80LS / DMG1008LSW = IP006578