Which of the four files should I install?

[paolosezart]

There are four files with the extension img.gz in https://github.com/raisedadead/travel-router/releases/tag/v1.0. Which of these files will be suitable for installing the wonderful travel-router project on raspberry pi 4B? I mean which of the img.gz files should be written to the SD card? And please advise me which program to use, Raspberry Pi Imager or balenaetcher is better to write the image to microSD? Thanks in advance for the answers to my primitive questions.

[raisedadead]

No worries.

But I really hope you did not miss this disclaimer:

[!WARNING] The firmware is customized for specific hardware configuration. If you have a different configuration, you may need to build the firmware yourself.

These images are for the CM4 variant, and not Pi 4B – you should really compile your own for the specific hardware. The difference is not much but you do not know what will break.

That said the main diff between the images are:

• File system formats EXT4 (Read-Write) vs SquashFS (Read-only)
• Install versions Factory (First-install) vs SysUpgrade (Updating from a previous build)

I typically go with the former in both cases for clean start and flexibility.

[raisedadead]

It doesn't matter what program you use. I use BalenaEtcher.