Old update over new?

Has anyone been able to install an older update over a newer one. My last update bojacked my Helix 9 and I would like to install the 1.83 back over the 1.900

Dave, I’m of no help.
I do hear of those that can do “A Do Over” ie reverting back to an earlier version, But for me with my old “Core Series” I could not and I also found that I could solve my issues an other way.

With the new birds that I have now (not Helix) I find that when I do a software up date, the base line that it will revert back to is the previously installed one. I have not tried this as of yet because I’ve only done one up date so far and there is a new one just behind door # 2!,,,,, Or do I want to choose door #3?

How do you revert to the previous baseline?

I actualy don’t know for sure. My Solix units are just a couple of months old now and I havn’t seen the need to revert back. I just read that the default revert software will be x.xx when I download a new version to my computers hard drive.

I always retain the previous version(s) on the sd card.
When the system loads it will then ask you if you want to install
the version that is not currently installed.
The wording of the request may be awkwardly stated,
read and answer appropriately.
If you have multiple versions of the install on the card
it will do this every time you boot it.
If the version you want is already loaded, don’t load the undesired version again.

Thanks guys, a very helpful support tech at Humminbird talked me through my problems. All is right as rain now.