Update zyxel USG FLEX 100 (4.55 to 5.21)
Hello everyone,
I have a zyxel USG FLEX 100 and I need to update it. However, it is in version 4.55 and I would like to upgrade it to 5.21. Normally, I would have to go through intermediate versions but these are not available since the ftp has been closed.
Do you have a link to get the old versions of this firmware or should I update directly to 5.21? In the last case, I would have to do a reset and then restore my configuration?
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Hi @Wassim,You can upgrade USG FLEX 100 from 4.55 to 5.21 directly. Before upgrading, remember to back up startup-config.conf of firmware 4.55. Then upload firmware 5.21 to standby firmware partition. More details can be found in this discussion.1
All Replies
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0
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Hi @Wassim,You can upgrade USG FLEX 100 from 4.55 to 5.21 directly. Before upgrading, remember to back up startup-config.conf of firmware 4.55. Then upload firmware 5.21 to standby firmware partition. More details can be found in this discussion.1
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