I have seen posts saying I can't upgrade V19 to V22 in one go, is this true?
I have no packages so can I just save my config and install V22 as if I had just converted the stock firmware
Will the V19 config file be recognised by V22
No, there's usually a reset required going from 19 to 22 or 23.
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Wow that was superquick reply, thanks for that.
What is a reset?
Do you mean I have to rebuild all my configs from scratch or just power off the router?
No. Take a backup for reference. Most packages added will typically be compatible across versions,
Most incompatibilities across versions usually involve your core network stack configs.
Use the changelogs from 19 through 23 to familiarize what has changed between 19 - 23, then use your backup to accommodate the changes.
basically saying no best not to update a few versions
but save current setting for future reference if and when or if you need it to look back
but update you firmware with NOT saving settings
I'd go to v23 if your router can take it
and yes build the setting from a black "factory default" state
from v19 to 22 or 23 there will be changes with memory layout or switch drivers
tho you didn't give a model most have changed something