Blocco in Fastboot mode

Salve, ho un problema, devo aver fatto qualcosa sulla recovery TWRP...
Adesso non riesco più ad entrare nella recovery, mi si blocca in fastboot mode...
Da ADB :
PS C:\adb> Fastboot flash recovery recovery.img
target reported max download size of 536870912 bytes
sending 'recovery' (28814 KB)...
OKAY [ 0.635s]
writing 'recovery'...
OKAY [ 0.350s]
finished. total time: 0.985s
PS C:\adb> Fastboot boot recovery recovery.img
cannot load 'recovery': No such file or directory..
Non mi muovo da qui..
con
PS C:\adb> adb devices
List of devices attached
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
1449d8xxxxx unauthorized
Che posso fare..
Grazie