[YMCS/YDMP Free Trial Program]Yealink would like to offer Free Trial Program of Yealink device management service for our current eligible customers. You can see the details below.
https://www.yealink.com/ydmp-freetrial-2020


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Firmware T57W
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Pius Offline
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Post: #1
Firmware T57W
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? Huh
Thanks
03-10-2022 09:00 PM
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complex1 Offline
3CX Adv. Cert. Engineer
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Posts: 1,283
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Post: #2
RE: Firmware T57W
(03-10-2022 09:00 PM)Pius Wrote:  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? Huh
Thanks

Hi,

Please read this link:
How to Upgrade Firmware on Yealink IP Phones

Kind regards,
Frank.

I am not an employee of Yealink.
Dutch is my native language, not English. Apologies for my imperfect grammar.
Please do not send unsolicited PM messages. I will not answer them.
03-10-2022 11:22 PM
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Pius Offline
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Post: #3
RE: Firmware T57W
Hello,
thanks for the feedback.
I already know the article Wink
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
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complex1 Offline
3CX Adv. Cert. Engineer
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Posts: 1,283
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Post: #4
RE: Firmware T57W
(03-25-2022 11:04 PM)Pius Wrote:  Hello,
thanks for the feedback.
I already know the article Wink
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.

Kind regards,
Frank.

I am not an employee of Yealink.
Dutch is my native language, not English. Apologies for my imperfect grammar.
Please do not send unsolicited PM messages. I will not answer them.
03-26-2022 04:41 AM
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Yisroel_MongoTEL Offline
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Posts: 222
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Reputation: 8
Post: #5
RE: Firmware T57W
(03-25-2022 11:04 PM)Pius Wrote:  Hello,
thanks for the feedback.
I already know the article Wink
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.
03-29-2022 11:00 PM
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Pius Offline
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Posts: 3
Joined: Mar 2022
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Post: #6
RE: Firmware T57W
Hello,
thank you gyus Smile
the manufacturer/supplier (of course ->) don t support this.
Ok, i ll look for an other solution.
Have a nice weekend.
04-01-2022 10:44 PM
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