electrum-personal-server VS HWI

Follow the instructions on Electrum Personal Server. Don't let the word "server" deter you. Often this can mean "open a localhost http port". Assuming you have enough privledge on your PC to bind a TCP/IP port, you should be fine.

There are some server implementations that make use of XPUBs. For instance, Electrum Private Server is an implementation that must be configured with XPUBs of all wallets you want to use with it, so it can scan the blockchain for them, in return for much lower resource usage than regular servers that have to index the necessary information of every transaction ever made. But EPS is only suitable for private use, hence the name.

(A) Link it to your own Bitcoin Core node. You will need a little indexer called Electrum Private Server. https://github.com/chris-belcher/electrum-personal-server/releases . Once you do that, you won't have to ask any other Bitcoin node for transaction history or to broadcast your transactions. You become your own bank, literally.

Electrum Personal server v0.2.4 (Released: 16th June 2022) - https://github.com/chris-belcher/electrum-personal-server/releases

You need Electrum PERSONAL Server, not Electrum Server. Big difference!

To gain some privacy by using Electrum you should set up Tor on Network preferences or by installing your own Electrum server via Electrum Personal Server, ElectrumX or Electrs.

You are asking about whether Trezor Suite supports PSBT format, and the answer is no. There's however several options that do support PSBT and work with Trezor, such as HWI, Electrum, and presumably also Sparrow Wallet itself.

If your OS is Linux you need to create a set of udev rules for the hardware wallet to be reachable. The instructions can be found here: https://github.com/bitcoin-core/HWI/blob/master/hwilib/udev/README.md

Options are HWI or Electrum or some hardware devices' software apps support SPV HWI: https://github.com/bitcoin-core/HWI Multiple choices of Electrum server: https://blog.keys.casa/electrum-server-performance-report-2022/

A partial support was already developed by Andrew Chow in https://github.com/bitcoin-core/HWI (merged just a few days ago), which will probably be released soon; HWI is used by bitcoin-core and several other software wallets, so that release will already bring an improved support − but support for policy registration will be partial and therefore a bit inconvenient to use.

yes, but you need to use this tool https://github.com/bitcoin-core/HWI

This is usually done with HWI. Some people have forked the code and used it in a nice skinned GUI, but I can't recall the name. Maybe someone can post it here. I did it all through command-line and did a fairly detailed writeup. It's pretty easy, just hard to guess the skillset of the reader.

Yes I've used the official Ledger Live software and tried multiple cables, including 2 different Ledger cables. I just updated the udev rules a la https://github.com/bitcoin-core/HWI/tree/master/hwilib/udev but still nothing. I can see everything in Ledger Live, can activate my Manager, etc, just I can't send anything from Wasabi anymore.