How to downgrade from 10.1.57.14 on D715 to version 8.9.3.80 or else?Ā 

When i try to upload version http://downloads.snom.com/fw/snom715-8.9.3.80-SIP-r.bin

Phone doesn't download it and i see message: wrong or corrupt update error 98Ā 

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Alexander Cheburkin

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Joined: 21.06.2023

3 Comments

  1. Alexander Cheburkin

    Jun 29, 2023

    Also try network recovery via tftp and http servers

  2. Gianmaria Tononi

    Jun 29, 2023

    Hi,

    Please try the https URL https://downloads.snom.com/fw/snom715-8.9.3.80-SIP-r.bin

    If it still doesn't work it may just be that the hardware on your D715 is too recent and doesn't accept a downgrade to such an old firmware, and there is no way around that: we do no support our old 8.x.x.x firmware versions anymore and we do not recommend them on our devices

    Thank you

  3. Alexander Cheburkin

    Jun 29, 2023

    Tryed to restart update a few times, then try http network recovery, i think there was files problem, so i try from the begining, try http and its okĀ