[SOLVED] linux-image-bcm2836 4.9.58+-1508682881 breaks Xbian, doesn't boot

[Nachteule]

@naox

You need a running Linux system for doing that

1) Download and gunzip latest image XBian_Latest_rpi3.img.gz
2) map partitions inside of this image via command sudo kpartx -av XBian_Latest_rpi3.img
3) mount first partition by sudo mount /dev/mapper/loop0p1 /mnt
4) mount you sd-card, hopefully your XBian boot partition will be mounted to /media/xbianboot automatically
5) replace all files of the XBian boot partition (it is not the first partition of the sd-card, because this is the noobs boot partition) which two exceptions:
do not overwrite cmdline.txt and config.txt
6) umount sd-card and reboot Pi
7) when Pi is up again, install older kernel

Another solution could be (the issue seems to be identified/fixed) could be (untested):

1) remove all *.dtb files from XBian boot partition
2) reboot Pi
3) when Pi is up again, install older kernel

Btw, new 4.9.58 kernel packages has been built and successfuly tested