[Droid Turbo 2 Q&A, Help & Troubleshooting] freshmike:
HI All,

I got a XT1580 from a friend and I'm trying to help him out. The phone loops on the Moto Logo or goes into Bootloader mode. Recovery seems not to work .. (shows : no command). Phone has a locked BL, when I try to use the Moto Unlock code, it says of course I need to All OEM Unlock in Android settings .. what an irony, the phone is not starting up to set this. I have installed RSD Lite, tried to flash stock rom .. fails on flashing gpt.bin.

I tried flashing manually:

D:\Incomming\platform-tools-latest-windows\platform-tools\xforce>fastboot flash logo logo.bin
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:logo: not found
target reported max download size of 536870912 bytes
sending 'logo' (1889 KB)...
OKAY [ 0.063s]
writing 'logo'...
OKAY [ 0.094s]
finished. total time: 0.156s

D:\Incomming\platform-tools-latest-windows\platform-tools\xforce>fastboot flash boot boot.img
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:boot: not found
target reported max download size of 536870912 bytes
sending 'boot' (40960 KB)...
OKAY [ 1.281s]
writing 'boot'...
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 1.922s

D:\Incomming\platform-tools-latest-windows\platform-tools\xforce>fastboot flash recovery recovery.img
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:recovery: not found
target reported max download size of 536870912 bytes
sending 'recovery' (41040 KB)...
OKAY [ 1.264s]
writing 'recovery'...
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 1.929s

D:\Incomming\platform-tools-latest-windows\platform-tools\xforce>fastboot flash system system.img_sparsechunk.0
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:system: not found
target reported max download size of 536870912 bytes
sending 'system' (256768 KB)...
OKAY [ 7.931s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 8.290s

D:\Incomming\platform-tools-latest-windows\platform-tools\xforce>fastboot flash system system.img_sparsechunk.1
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:system: not found
target reported max download size of 536870912 bytes
sending 'system' (255430 KB)...
OKAY [ 7.913s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 7.945s

D:\Incomming\platform-tools-latest-windows\platform-tools\xforce>fastboot flash system system.img_sparsechunk.2
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:system: not found
target reported max download size of 536870912 bytes
sending 'system' (256099 KB)...
OKAY [ 7.854s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 7.885s

D:\Incomming\platform-tools-latest-windows\platform-tools\xforce>fastboot flash system modem NON-HLOS.bin
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:system: not found
error: cannot load 'modem': No such file or directory

D:\Incomming\platform-tools-latest-windows\platform-tools\xforce>fastboot flash modem NON-HLOS.bin
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:modem: not found
target reported max download size of 536870912 bytes
sending 'modem' (40420 KB)...
OKAY [ 1.234s]
writing 'modem'...
OKAY [ 0.859s]
finished. total time: 2.094s

D:\Incomming\platform-tools-latest-windows\platform-tools\xforce>fastboot flash fsg fsg.mbn
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:fsg: not found
target reported max download size of 536870912 bytes
sending 'fsg' (661 KB)...
OKAY [ 0.031s]
writing 'fsg'...
OKAY [ 0.031s]
finished. total time: 0.062s

D:\Incomming\platform-tools-latest-windows\platform-tools\xforce>fastboot erase cache
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:cache: not found
erasing 'cache'...
OKAY [ 0.047s]
finished. total time: 0.047s

D:\Incomming\platform-tools-latest-windows\platform-tools\xforce>fastboot erase userdata
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:userdata: not found
erasing 'userdata'...
OKAY [ 0.656s]
finished. total time: 0.672s

D:\Incomming\platform-tools-latest-windows\platform-tools\xforce>reboot
'reboot' is not recognized as an internal or external command,
operable program or batch file.

D:\Incomming\platform-tools-latest-windows\platform-tools\xforce>fastboot reboot
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
rebooting...

Anyone any ideas? Just tying to get stock working.