I’ve tried to install SF4 (paid version) onto a new Xperia 10 II (XQ-AU52) from my pc running Linux Mint 20.2, but regrettably without success.
I’ve followed all the steps mentioned in How to install Sailfish X on Xperia™ 10 II on Linux - Jolla, including an upgrade to Android 11, pointing the terminal to the directory where the image file resides, and then finally gotten the blue LED-light in step 7.8.
However, after entering the “sudo fastboot oem unlock 0x…” terminal command in step 7.10, I don’t get the proscribed result referred to in step 7.11, but rather the message: " waiting for any device ".
At first I thought that maybe the problem is that the phone was not switched on while performing step 7.10, but I deduce from the instruction in step 7.12 that it really is meant that the phone at this stage (7.10) shall not be switched on again, after first having been switched off in step 7.7.
I’ve tried with two very different USB-C cables (with intermediate full restart of the phone and termination of the terminal session), and now I’ve no idea how to proceed.
Can anybody help me?
[Edit: made the error message visible, as the < and > signs within the quote made it disappear.]