Moving from Pi3 to Pi4

[jrprinter]

If I am moving from a Pi3 to a Pi4, do I need to create a fresh install of Octoprint, or can I just move the SD card from the old board to the new one?

Thanks in advance,
pete

[Ewald_Ikemann]

Hello @jrprinter !

You may get some hints from this thread:

Can't you swap the SD to another Pi and have it boot right up?

What is the problem? I have a Pi 4b 2GB model Octopi/print has been running on for about a year now. I got my hands recently on an Pi 4b 8GB model. I figured swapping the SD card from one to the other would be the only thing I need to do. However, it never connects to WiFi as I never see it in the router's connected devices list nor does it respond to octopi.local address. Am I missing something? What did you already try to solve it? Swapped between power supplies, but that doesn't seem to be…

[jrprinter]

Hi, Ewald!

I took a look at that thread and it's about moving from one model of Pi4 to another. The solution mentions updating the OS and the boot firmware, but it seems if I did that on the Pi3 before transferring the card to the Pi4, it wouldn't update properly for the Pi4.

If I move the card into the Pi4 and then run the updates, will it boot properly in the Pi4 before I update the OS and the firmware?

Also, I connect to the network through Ethernet, so I'm not too worried about WiFi.

Thanks,
pete

[Ewald_Ikemann]

The basic information are the same:
What OctoPi version do you have?
Can that handle the RasPi 4 without upgrading ?
Is it worth the effort (upgrading can take some time).

And at least: just try the card from the Pi3 in the Pi4.

[Charlie_Powell]

@jrprinter

but it seems if I did that on the Pi3 before transferring the card to the Pi4, it wouldn't update properly for the Pi4.

What makes you think this? It works for all Pi models, but if you have flashed OctoPi 0.18 then you are already good.

[jrprinter]

I recall reading something about how they changed the Pi4 hardware so that the Raspbian was a tiny bit different when installed on a Pi4.

pete

[jrprinter]

I'm running the current version of OctoPi on the 3B+ right now.

pete

[Ewald_Ikemann]

So it's 0.18.0?

You can find it on the bottom left of the web GUI.

[jrprinter]

Well, I thought I was on 0.18.0, but apparently I'm on 0.17.0...

[PrintedWeezl]

@jrprinter

The solution mentions updating the OS and the boot firmware, but it seems if I did that on the Pi3 before transferring the card to the Pi4, it wouldn't update properly for the Pi4.

How so?
If you update the OS of the Octopi 0.17.0 image it should be even newer than the OS of the Octopi 0.18.0 image.

The update is the same for all pis - the pi 4 doesn't update the OS in any other way.

[jrprinter]

I tried plugging the SD card from the Pi3 into the Pi4; it looked like it booted, but I got nothing on the screen (a BTT PiTFT50). When I booted a new SD build, the screen displayed what was going on.

pete