I was trying to setup a custom host name for my device(a rooted xperia z) following this guide but without paying too much attention, especially to the comments.
I'm guessing I had a typo in the edited build.prop file because after I rebooted the phone was stuck in a boot loop: I would see the sony logo but instead of the usual xperia logo and colourful boot animation the phone would restart.
I can turn off the phone and I think I've managed to get it in a different state by pressing the volume up key multiple times after powering up because I could see a blue led always on. Before that in between boots I would see a red led blink twice.
Unfortunately the phone reboots to fast to become visible to adb. What are my options on restoring/editing the build.prop file ? Can I somehow see the phone's filesystem on a computer without booting the phone into android ? Also I don't mind loosing all the data as long as I can use the phone again.