Hello.
I would like to install new firmware on a Yealink phone, but it cannot be updated with the current firmware. Can I delete the current firmware from the phone via USB and upload new firmware?
Thanks
Hello,
thanks for the feedback.
I already know the article
The problem i have, is to update from a specific firmware.
Current Firmware: 96.86.0.23
Needed Firmware: 97.84.150.5 (T57W-97.84.150.5.rom)
Thanks and Kunde regards
(03-25-2022 11:04 PM)Pius Wrote: [ -> ]Hello,
thanks for the feedback.
I already know the article
The problem i have, is to update from a specific firmware.
Current Firmware: 96.86.0.23
Needed Firmware: 97.84.150.5 (T57W-97.84.150.5.rom)
Thanks and Kunde regards
Hi,
Sorry, I can't help you because I don't know who the manufacturer/supplier of firmware xx.xx.
150.x is.
If you know who the supplier is, I recommend that you contact them directly.
(03-25-2022 11:04 PM)Pius Wrote: [ -> ]Hello,
thanks for the feedback.
I already know the article
The problem i have, is to update from a specific firmware.
Current Firmware: 96.86.0.23
Needed Firmware: 97.84.150.5 (T57W-97.84.150.5.rom)
Thanks and Kunde regards
TFTP recovery might be a way, but I would not risk it.
Not only that x.86.x.x is way newer than x.84.x.x. But 96.x.x.x has switched away from 97.x.x.x to become one unified firmware with T53W and T54W which makes it less likely to be able to switch.
Also note that as indicated here
https://support.yealink.com/en/portal/do...67d60df0b9 V2 phones cannot be downgrades to lower than 96.86.x.x.
Hello,
thank you gyus
the manufacturer/supplier (of course ->) don t support this.
Ok, i ll look for an other solution.
Have a nice weekend.