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I currently run Z Way on a RPi2 which is having considerable delays so I'd like to upgrade. I have fresh installed on a RPi4 but the backup misses out several rules, I've tried several backups and it's the same each time. But for the rules that have restored then I can tell that on an RPi4 everything is much faster, no delays that I noticed. So is it possible to just take the SD card out of the RPi2 and install in either an RPi3 or 4? I've already updated to Buster and Z Way 3.0.1 on the RPi2.

Of course I could just try it, but I don't want to risk something going wrong, especially with the backups not working.

Make a backup image of the SD card, which you can restored later is case something is messed up.

Try it out and let us know!

I never considered an image, I'll hopefully get a chance tomorrow and will report back.

Thanks.

Ok I made an image of the RPi2 SD card and wrote it to a new SD card which I used and worked well in an RPi3. Unfortunately it did not work in an RPi4, no green light flickering on power on so I assume a problem with the image booting?

Initial observations on the RPi3 is much faster operation, almost instant light operation etc. and especially when accessing Z-Way from a PC or phone.

I'll leave the RPi3 going for now and see how the speed is over a few days as I found the RPi2 speed changed which I assumed was due to the amount of activity.

I did my own upgrade meanwhile, from a RPi3 to Rpi4. I did a clean install on the RPi4 and loaded a backup of z-way made on the RPi3, because I updated my Razberry board as well from v1 to v2.
Previously I cleaned up my z-way setup and migrated the scenes and rules to the "new" UI scenes and rules because I had some issues with a previous trial (but didn't have time at that time to check exactly what went wrong).
My new trial of migration worked pretty well, with some minor issues:
- some apps/modules I had to download again, but then it worked as intended
- custom set icons didn't display. solved by deleting all icons (no image) and downloading the icon packs again
- room images were also empty. Here I have no solution as I get error when trying to delete the previously set image (currently empty frame). Only one image is permitted per room
- .syscommands I had to update manually (but I expected this one), not a real issue, but it would be more convenient if this would be also backed up

Yes clean RPi4 install works for me too, it's just frustrating how the backup is not complete. I've been using backups downloaded to my PC, so maybe I should try a Z-Way cloud stored backup incase it's more complete (have doubts, but worth a try).

At the start on the RPi2 to upgrade from Stretch to Buster I used the Z-way upgrade instructions (https://z-wave.me/z-way-v3-0-0/) plus I had to do the below, as in this post to get it working (https://forum.z-wave.me/viewtopic.php?f ... 6&start=10)
sudo apt-get --reinstall install -o Dpkg::Options::="--force-confmiss" -o Dpkg::Options::="--force-confold" -y z-way-server
During the upgrade I noticed text saying it was removing RPi4 stuff due to no space in the boot section (text moved quite quickly up the screeen so I cannot remember exactly, and I never scrolled back for a screendump. I expect this could be why, so I might try it again on the Rpi3 and see if it happens again I can do a screendump and hopefully figure how to fix it. Getting the RPi4 working would be best as at the moment I've stole my son's RPi3 he uses for his Retropie.