Danke für den Tipp und die schnelle Antwort,
gerade nochmal getestet, sieht jetzt wie folgt aus :
C:\Users\Nico>fastboot format userdata
Creating filesystem with parameters:
Size: 53678682112
Block size: 4096
Blocks per group: 32768
Inodes per group: 8192
Inode size: 256
Journal blocks: 32768
Label:
Blocks: 13105147
Block groups: 400
Reserved block group size: 1024
Created filesystem with 11/3276800 inodes and 251748/13105147 blocks
target reported max download size of 536870912 bytes
erasing 'userdata'...
OKAY [ 1.156s]
sending 'userdata' (140697 KB)...
OKAY [ 5.138s]
writing 'userdata'...
OKAY [ -0.000s]
finished. total time: 6.294s
C:\Users\Nico>fastboot boot C:\fastboot\twrp.img
downloading 'boot.img'...
OKAY [ 1.891s]
booting...
FAILED (remote: Failed to load/authenticate boot image: Load Error)
finished. total time: 1.953s
C:\Users\Nico>fastboot flash recovery C:\fastboot\twrp.img
target reported max download size of 536870912 bytes
sending 'recovery' (51236 KB)...
OKAY [ 1.875s]
writing 'recovery'...
OKAY [ 0.234s]
finished. total time: 2.109s
C:\Users\Nico>fastboot boot C:\fastboot\twrp.img
downloading 'boot.img'...
OKAY [ 1.875s]
booting...
FAILED (remote: Failed to load/authenticate boot image: Load Error)
finished. total time: 1.937s
Fehlerbild bleibt leider das selbe, ich komme weiterhin nicht in den TWRP boot und bekomme eine boot loop in den fastboot (was ein satz.)
Danke und Grüße
Nico