I can't get this working. Of course I'm not experienced with stuff like this. The phone came with Android 7.0. In Windows I installed the Flash Tool (Emma), which did not connect automatically. On the Sony pages I found the X was not mentioned with a key to connect to Emma!? (https://developer.sonymobile.com/ope...ported_phones/) Then I found that the bootloader needs to be unlocked first. (OK, why not, never mind backing up the TA partition an DRM keys now.) I decided to get my unlock key anyway. The description says to install the Android SDK, but only the command tools at the bottom. Fine, but this is only a zip file. The Extras folder where I should update a driver is not there, it's probably necessary to install the entire SDK... I rest my case for now, I'll just wait for a more convenient tool from SailfishOS...