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+-- Forum: IP Phone Series (/forumdisplay.php?fid=4)
+--- Forum: General topics (/forumdisplay.php?fid=15)
+--- Thread: Firmware update failed (/showthread.php?tid=42332)
Firmware update failed - Utendo - 12-17-2018 08:08 AM
Hello,
after applying the recommended update for 3cx (66.83.0.55), it is impossible to downgrade or upgrade to another version, message update failed.
Recovery mode does not work either, message "File too large"
what to do?
thank you.
RE: Firmware update failed - complex1 - 12-17-2018 11:02 AM
(12-17-2018 08:08 AM)Utendo Wrote: Hello,
after applying the recommended update for 3cx (66.83.0.55), it is impossible to downgrade or upgrade to another version, message update failed.
Recovery mode does not work either, message "File too large"
what to do?
thank you.
Hi,
Please read this link
https://www.3cx.com/community/threads/yealink-firmware-upgrade-downgrade.61221/