ecco qui:
C:\Program Files (x86)\Android\android-sdk\tools>fastboot devices
HT0AKPL01272 fastboot
C:\Program Files (x86)\Android\android-sdk\tools>fastboot getvar all
(bootloader) version: 0.5
(bootloader) version-bootloader: 0.80.0000
(bootloader) version-baseband: 5.11.05.27
(bootloader) version-cpld: None
(bootloader) version-microp: 051d
getvar:all FAILED (status read failed (Too many links))
finished. total time: 0.005s