@gpatel-fr Cheers! I'll stop by an electronics store tomorrow to get a proper cable that will be my dedicated flashing cable. Guess there is no need risking anything.

Hi all! I recently got a hold of a second-hand FP4 for the sole purpose of testing out Linux-distros, and I'm starting out with Ubuntu Touch. I hope to first play around with it as a secondary phone (without a permanent SIM installed), but if it seems I would be able to daily drive it, I will attempt to do so for some weeks.

I have a couple of questions before I get started though, and was hoping these would be easy for you answer and help me get going:

1. It is stated I need to be on the Android 11-version of Fairphone OS in order to install it. The phone I got came with Android 15 installed, and before I proceed with downgrading to 11, I just wanted to confirm that this is in fact a requirement, and that it is not just a case of the instructions not having been updated since Fairphone has updated their OS.

2. On Fairphone's website, it is stated that I will brick my device if the security patch of the OS is behind whatever I have installed now (with Fairphone OS 15). Would going from Android 15 -> Android 11 -> Ubuntu Touch allow me to relock the bootloader?

3. There's a lot of emphasis on proper data cables, and I've had issues with this before when installing custom ROMs. Is there a way to test the cable beforehand? Am I at risk of bricking the device if I use a bad cable? When I previously had issues, the flashing would just be unable to finish properly, but no harm was done, and I could retry with another cable.

Looking forward to trying this out.