I don't remember but I assume it was JY-S1 like the S1_JYS1N009_20131017
I just managed to get my phone into download(fastboot?) mode.
I did it by holding vol+ & vol- and then connecting the usb cable.
http://s28.postimg.org/g2i2od8jx/image.png
http://s18.postimg.org/mbmue8zx5/PA070947.jpg
Hello. Sorry for writing in English, unfortunately I don't speak German.
I recently got my Jiayu S1 from PandaWill (it came with the "S1-JYS1N011-20131219" firmware). After messing with the APN settings it suffered a bootloop everytime it was connecting to a wifi network. I tried to flash the...