[Droid Turbo 2 General] Zeljko1234:
So in short, problem is in your PC. Try to flash from different one. With bootloop, do you mean is not passing boot animation? Remove sd card if is in, wipe all what you can from recovery... Not much with stock and RSD should wipe it anyway.

Also try (imagine is screenshot, do not select, copy, paste :D):

mfastboot erase modemst1
mfastboot erase modemst2
mfastboot erase cache
mfastboot erase userdata
mfastboot oem fb_mode_clear

After we figured out that zip actually contain numbered chunks, you can flash with mfastboot. Here is my log (again, imagine is screenshot :D), adjust for your number of chunks. Notice, I didn't erase userdata because it was upgrade. In your case, erase.

c:\a\adb\Force>fastboot devices
ZY222TSXT3 fastboot

c:\a\adb\Force>mfastboot flash boot boot.img
target max-sparse-size: 256MB
sending 'boot' (40960 KB)...
OKAY [ 0.934s]
writing 'boot'...
OKAY [ 1.411s]
finished. total time: 2.352s

c:\a\adb\Force>mfastboot flash recovery recovery.img
target max-sparse-size: 256MB
sending 'recovery' (41040 KB)...
OKAY [ 0.927s]
writing 'recovery'...
OKAY [ 1.432s]
finished. total time: 2.362s

c:\a\adb\Force>mfastboot flash system system.img_sparsechunk.0
target max-sparse-size: 256MB
sending 'system' (256887 KB)...
OKAY [ 5.467s]
writing 'system'...
OKAY [ 8.115s]
finished. total time: 13.584s

c:\a\adb\Force>mfastboot flash system system.img_sparsechunk.1
target max-sparse-size: 256MB
sending 'system' (255844 KB)...
OKAY [ 5.436s]
writing 'system'...
OKAY [ 7.232s]
finished. total time: 12.672s

c:\a\adb\Force>mfastboot flash system system.img_sparsechunk.2
target max-sparse-size: 256MB
sending 'system' (260242 KB)...
OKAY [ 5.576s]
writing 'system'...
OKAY [ 7.488s]
finished. total time: 13.067s

c:\a\adb\Force>mfastboot flash system system.img_sparsechunk.3
target max-sparse-size: 256MB
sending 'system' (255109 KB)...
OKAY [ 5.440s]
writing 'system'...
OKAY [ 7.067s]
finished. total time: 12.510s

c:\a\adb\Force>mfastboot flash system system.img_sparsechunk.4
target max-sparse-size: 256MB
sending 'system' (253098 KB)...
OKAY [ 5.486s]
writing 'system'...
OKAY [ 7.206s]
finished. total time: 12.699s

c:\a\adb\Force>mfastboot flash system system.img_sparsechunk.5
target max-sparse-size: 256MB
sending 'system' (255209 KB)...
OKAY [ 5.486s]
writing 'system'...
OKAY [ 7.545s]
finished. total time: 13.041s

c:\a\adb\Force>mfastboot flash system system.img_sparsechunk.6
target max-sparse-size: 256MB
sending 'system' (255040 KB)...
OKAY [ 5.500s]
writing 'system'...
OKAY [ 7.457s]
finished. total time: 12.966s

c:\a\adb\Force>mfastboot flash system system.img_sparsechunk.7
target max-sparse-size: 256MB
sending 'system' (258048 KB)...
OKAY [ 5.550s]
writing 'system'...
OKAY [ 7.079s]
finished. total time: 12.636s

c:\a\adb\Force>mfastboot flash system system.img_sparsechunk.8
target max-sparse-size: 256MB
sending 'system' (257486 KB)...
OKAY [ 5.571s]
writing 'system'...
OKAY [ 7.167s]
finished. total time: 12.747s

c:\a\adb\Force>mfastboot flash system system.img_sparsechunk.9
target max-sparse-size: 256MB
sending 'system' (257017 KB)...
OKAY [ 5.545s]
writing 'system'...
OKAY [ 7.192s]
finished. total time: 12.746s

c:\a\adb\Force>mfastboot flash system system.img_sparsechunk.10
target max-sparse-size: 256MB
sending 'system' (242969 KB)...
OKAY [ 5.247s]
writing 'system'...
OKAY [ 12.415s]
finished. total time: 17.670s

c:\a\adb\Force>mfastboot flash system system.img_sparsechunk.11
target max-sparse-size: 256MB
sending 'system' (191628 KB)...
OKAY [ 4.124s]
writing 'system'...
OKAY [ 9.106s]
finished. total time: 13.233s

c:\a\adb\Force>mfastboot flash modem NON-HLOS.bin
target max-sparse-size: 256MB
sending 'modem' (40475 KB)...
OKAY [ 0.873s]
writing 'modem'...
OKAY [ 0.989s]
finished. total time: 1.869s

c:\a\adb\Force>mfastboot erase modemst1
erasing 'modemst1'...
OKAY [ 0.014s]
finished. total time: 0.016s

c:\a\adb\Force>mfastboot erase modemst2
erasing 'modemst2'...
OKAY [ 0.006s]
finished. total time: 0.008s

c:\a\adb\Force>mfastboot flash bluetooth BTFM.bin
target max-sparse-size: 256MB
sending 'bluetooth' (1298 KB)...
OKAY [ 0.031s]
writing 'bluetooth'...
OKAY [ 0.039s]
finished. total time: 0.076s

c:\a\adb\Force>mfastboot flash fsg fsg.mbn
target max-sparse-size: 256MB
sending 'fsg' (744 KB)...
OKAY [ 0.019s]
writing 'fsg'...
OKAY [ 0.039s]
finished. total time: 0.062s

c:\a\adb\Force>mfastboot erase cache
erasing 'cache'...
OKAY [ 0.027s]
finished. total time: 0.028s

c:\a\adb\Force>mfastboot oem fb_mode_clear
...
OKAY [ 0.001s]
finished. total time: 0.002s

c:\a\adb\Force>mfastboot reboot
rebooting...

finished. total time: 0.002s

c:\a\adb\Force>