Yealink IP Phone Unable to Factory Reset ~ Lost Admin Password ~ USB Firmware Recovery Mode SIP-T42S
Ғылым және технология
In this video we go over how to unlock a Yealink SIP phone which has an unknown administrative password applied thus preventing a successful factory reset. We will show how to get past this problem by putting the phone into a factory firmware recovery mode and upgrading the firmware via a USB key. Furthermore I will show you how to get the phones' MAC address removed from Yealinks' Remote Provisioning Service (RPS) database to prevent the service provider assigned admin password from being automatically reapplied again. The IP phone model we illustrate in this video is the Yealink SIP-T42S, or just T42S. But the procedure _should_ be the same, or similar, for the following other Yealink SIP phone models as well: T46S, T48S, T27G, T41S, T54S, and T52S.
*The eBay and Amazon search links below are paid links, for which I may be compensated and earn a commission, if you choose to buy the parts and tools shown in this video thru them:*
ADATA USB key: ebay.us/DJeTSR or amzn.to/3O6zB2p
Used Yealink SIP-T42S IP phone: ebay.us/GMiXpV
_And if I've saved you some $$ here, consider some coins for the coffee tip-jar!_ ko-fi.com/drshock
Chapters:
0:00 - Problem overview
1:15 - How to perform firmware recovery via USB
#drshock
_Disclaimer: DrShock, the alias for the human content creator for this KZread channel, is not responsible for any damages, injuries, losses, or liabilities associated with any repairs, upgrades, or maintenance performed on yours, or any other, product whatsoever. No warranty, express or implied, is made as to the accuracy or completeness of any information provided within this channel. Viewing and using the “as-is" information of this channel is totally at your own risk. Always wear personal protection equipment and follow appropriate product manufacturer service manual guidelines with original manufacturer parts only when performing any repairs, upgrades, or maintenance upon any product._
Пікірлер: 7
Do you have a link to the files I can't find it and followed all the steps it's the link at section 5:05 of the video. Thanks
@DrShock
4 ай бұрын
No, I do not. Yealink does not permit re-hosting their firmware (legal / copyright restriction). But it's freely available on their site as I showed if you are located within the USA. You may have to create a support account first if you are not.
@wgbtide87
4 ай бұрын
@@DrShock those links are not appearing for me for some reason. Could you onedrive share those RM files or transfer them to me somehow?
@TimNewtonMobile
3 ай бұрын
They have changed their website since your release, they have revomed the links forthe secondary recovery files. Thefiles were moved from the locations as well.
@DrShock
3 ай бұрын
I would suggest you open up a support case and just request access to the recovery file(s) for your SIP phone model. That was how we used to get these recovery files from Yealink in years past. Not sure why they are hiding the links as that just puts more work on their support folks.
Files no longer on their website
@DrShock
10 күн бұрын
Yep, too many situations where the phone could be stolen I suspect. You can only get access to the files now by opening the support ticket as I went over in the video. You'll have to prove legit ownership.