Upgraded firmware, bad news

[complex1]

(09-26-2022 10:41 PM)ctsmetrony Wrote:  In trying to register my W52P with a 3CX pbx, the 3CX instructions had me upgrade firmwares for the base and handsets. For the base, I downloaded and installed 1529371429716.81.0.30.rom and then W56H-61.85.0.35.rom for the handsets. It's been a mess ever since. At one hopeful point, the base was pingable and the first handset I tried seemed to register but it went into some interminable "Initializing" message. The other handset could not find the base. I have not been able to reach the base's web page and, after another base hard reset, it is not pinging.

I would appreciate steps that might salvage this equipment.

Thanks

Hi,

Please downgrade the W56H firmware to 61.83.0.50 because this version is fully compatible with v81 version of the base.
https://support.yealink.com/en/portal/do...89de274bdf

Please note:
After a firmware upgrade/downgrade, base or handset, a reset to factory default is required.