I have a project bkp which is in 8.1.35 and i need to downgrade it to 8.1.24.
From most of my searches, i found common suggestions that says uninstall current ignition version 8.1.35 and install 8.1.24. I have already tried doing so and it doesn't works. so is there any way i can do this?
Did you really uninstall it or simply running the install/modify executable?
Also, one of my coworkers had problems with uninstall and installing because it had it on all the users and didn't had the admin priviliges to uninstall on all, only in his one.
It can break a lot of things so the only reason to do it is a major issue (which usually has a patch released quickly anyway).
That said, pretty much the only way to do it is to take a backup of your gateway and then do a fresh install, then attempt to load the backup again:
yes i uninstalled 8.1.35 and just installed 8.1.24 few minutes ago.
yeh i followed this one but it doesn't worked so i come up with the new post.
Can you be more clear about what "didn't work"?
Did 8.1.24 not install successfully or something? Did the Gateway not start? What's your issue?
8.1.24 installed successfully. but i am still un able to restore the gateway backup
What happens when you try?
We don't maintain compatibility in that direction, so it's not entirely expected to be possible, though sometimes it is.
You might get farther if you modify a copy of the backup (if you rename it to a .zip you can open and change the files inside, then rename back when you're done) to adjust the version info and maybe remove anything that's related to the later version, but it's also likely to just break harder.
If you don't have much to lose, you could experiment with it as long as the original backup is in a safe place.
A gwbk file is actually just a zip file.
Inside that file there is a backupinfo.xml file.
Inside that file you can try changing the version to something like 8.1.26.2023032308.
There's no guarantee this backup will restore properly though.
Well it looks like a hard way to go, so i will have to do it in the last if there is no other way out. but thanks, that is helpful.
how can i open it?
by changing the extension to .zip?
Pretty much, you just change the extension and then it's a regular zip file.
You may or may not need to extract the files to make changes. (There's software like 7zip that lets you edit files more or less "in-place".)
After you're done, make sure everything is zipped back up like it was at the beginning and rename back to .gwbk
