Important 6800 Series Sip Phone Firmware Upgrade Information; Important M685I Expansion Module Firmware Downgrade Information - Mitel 6865i Release Notes

IMPORTANT 6800 SERIES SIP PHONE FIRMWARE UPGRADE
INFORMATION
WARNING: DO NOT ATTEMPT TO UPGRADE YOUR PHONE TO RELEASE 4.2.0
WHEN IN WEB RECOVERY MODE. DOING SO WILL CAUSE YOUR PHONE TO
BECOME NON-OPERATIONAL.
IMPORTANT M685I EXPANSION MODULE FIRMWARE DOWNGRADE
INFORMATION
If you upgrade your phone to Release 4.2.0 and an M685i Expansion Module is attached, the
M685i Expansion Module will also upgrade to align itself with the new UI changes.
If downgrading the phone with an M685i Expansion Module from Release 4.2.0 to a firmware
version of Release 4.1.0 (or below), it is required to first downgrade to a Release 4.1.0 Hot Fix
or 4.1.0 Service Pack and then to the Release 4.1.0 (or below) firmware version in such
scenarios.
This will ensure the UI of the M685i Expansion Module is aligned with the UI at all times.
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