Are the PPA Ubuntu packages ready to upgrade the wallet?
I remember that last time I had to compile the wallet. And I don't remember how I did it...

No, I don't believe that PPA issue was ever cracked yet, right MIP? We still can't build chia-bls due to chia not being available in the PPA upstream.
So, to upgrade a node you compiled yourself is very easy: See the Upgrade biblepay section:
https://github.com/biblepay/biblepay-evolution/blob/master/BuildBiblePay.txtThat's right Rob, we currently have 3 hurdles piling one over the next:
- We need to know how to create PPA dependency for relic toolkit library used by chia-bls
- Then find out how to create chia-bls as PPA using the relic PPA as dependency.
- Finally, the chia-bls library used by Dash (and us) is not even the official upstream, but a heavily customized one by Dash devs, so we need to know how to add the Dash patch to chia-bls to the PPA buid process.
That's why we are currently compiling our own linux binaries for Intel and ARM 32/64 architectures
You will find all of them in the "Wallet" menu options of
www.biblepay.org website.
Or you can also compile yourself. I you have problems to compile you can contact me on Discord channel.