downgrade

  1. Downgrade from 256sc to 192sc

    Hello all, hope you are all having a good day, i have a Subscription that will expire on the end of the month and we need to Downgrade from 256sc to 192sc. i asked my partner and said "that the downgrade is not available. If the customer needs a different license, you will have to purchase it...

  2. Fanvil w610w firmware downgrade

    Hi everyone! I made the mistake of upgrading a Fanvil W610W phone to firmware version 2.14.0.31.5 and I would like to downgrade it to 2.14.0.19. I tried updating through the 3CX website, but the phone just reboots. I also tried updating manually via the phone’s IP, but it says “failed.” The...
    • autsmash12
    • Thread
    • downgrade firmware provision
    • Replies: 1
    • Forum: Fanvil

  3. Downgrade 3CX

    After latest update from 20.7 to 20.9 one of our sip trunks stopped working. Regretably I do not have a backup of 3cx vm. Is there a way to dowgrade from 20.9 to 20.7 or to reintall using 20.7 image?
    • YP@R2K
    • Thread
    • downgrade
    • Replies: 2
    • Forum: 4SC
  4. KMorley

    Yealink SIP-T58W phone firmware downgrade before upgrade for 3CX V20

    I just received a bunch of new Yealink SIP-T58W Pro phones for a new customer installation. When attempting to install these on a V20 hosted system, the phones received their configurations, but would not register with 3CX. The result was a "No Service" indication on the phones and the phones...
    • KMorley
    • Thread
    • 150.86.0.39 150.87.0.15 downgrade firmware sip-t58w upgrade yealink
    • Replies: 4
    • Forum: Yealink

  5. Upgrade to V20 / possible emergency downgrade to V18

    Hello all ! I have looked in the forum but could not find the answer. We are about migrating 3CX from V18 to V20. Due to the changes in V20 (groups, working hours etc etc) and our current setup I would like to have an "life insurance" prior doing so. So would we do the step and migrate the...

  6. Downgrade Grandstream GDS3705 firmware?

    Hi there! I'm running into an issue of speakerphone volume being very quiet that we have confirmed is caused by a couple of Grandstream GDS3705 devices being on firmware 1.0.3.11 from the factory, and 3CX only supports up to 1.0.1.6. We've already confirmed that the issue we're having is being...
    • MUpton603
    • Thread
    • downgrade firmware gds3705 grandstream gds3705
    • Replies: 3
    • Forum: Other

  7. Yealink firmware upgrade issue

    Hello! I'm 3cx free trial tester. I have some voip phones Yealink T21P E2. I upgraded firmware on one phone to 52.83.0.55 (this is firmware from 3cx site. It's compatible with 3cx pbx). On Yealink official site i saw that 52.84.0.10 available. I tried to upgrade it. Upgrade process failed. I...
    • nickdsl
    • Thread
    • downgrade firmware upgrade yealink
    • Replies: 0
    • Forum: Server
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