[Moto G Q&A, Help & Troubleshooting] okaryn:
On device screen : "image is too large" for the system, no message for boot and recovery.

DOS output with mfastboot/fastboot-motoroal :

D:\moto\4.4.4 KXB21.14 FR>mfastboot.exe flash partition gpt.bin

target max-sparse-size: 256MB

sending 'partition' (32 KB)...

OKAY [ 0.026s]

writing 'partition'...

(bootloader) This may take a few seconds, if a

(bootloader) different partition table is being

(bootloader) flashed since we need to backup

(bootloader) and restore a few partitions

(bootloader) Flashing primary GPT image...

(bootloader) Flashing backup GPT image...

OKAY [ 0.356s]

finished. total time: 0.384s

D:\moto\4.4.4 KXB21.14 FR>mfastboot.exe flash motoboot motoboot.img

target max-sparse-size: 256MB

sending 'motoboot' (1953 KB)...

OKAY [ 0.096s]

writing 'motoboot'...

(bootloader) flashing tz ...

(bootloader) flashing rpm ...

(bootloader) flashing sdi ...

(bootloader) flashing aboot ...

(bootloader) flashing sbl1 ...

OKAY [ 1.113s]

finished. total time: 1.211s

D:\moto\4.4.4 KXB21.14 FR>mfastboot.exe flash logo logo.bin

target max-sparse-size: 256MB

sending 'logo' (1060 KB)...

OKAY [ 0.078s]

writing 'logo'...

OKAY [ 0.076s]

finished. total time: 0.157s

D:\moto\4.4.4 KXB21.14 FR>mfastboot.exe flash boot boot.img

target max-sparse-size: 256MB

sending 'boot' (10240 KB)...

OKAY [ 0.372s]

writing 'boot'...

OKAY [ 0.654s]

finished. total time: 1.030s

D:\moto\4.4.4 KXB21.14 FR>mfastboot.exe flash recovery recovery.img

target max-sparse-size: 256MB

sending 'recovery' (10240 KB)...

OKAY [ 0.383s]

writing 'recovery'...

OKAY [ 0.662s]

finished. total time: 1.050s

D:\moto\4.4.4 KXB21.14 FR>mfastboot.exe flash system system.img_sparsechunk.0

target max-sparse-size: 256MB

sending 'system' (259277 KB)...

OKAY [ 8.146s]

writing 'system'...

(bootloader) WARNING: System partition size is 0x34800000

(bootloader) Only multiples of 0x1000000 allowed for write-protection

(bootloader) Write protect will not be enabled

OKAY [ 4.948s]

finished. total time: 13.099s

D:\moto\4.4.4 KXB21.14 FR>mfastboot.exe flash system system.img_sparsechunk.1

target max-sparse-size: 256MB

sending 'system' (247529 KB)...

OKAY [ 7.785s]

writing 'system'...

(bootloader) WARNING: System partition size is 0x34800000

(bootloader) Only multiples of 0x1000000 allowed for write-protection

(bootloader) Write protect will not be enabled

OKAY [ 4.172s]

finished. total time: 11.962s

D:\moto\4.4.4 KXB21.14 FR>mfastboot.exe flash system system.img_sparsechunk.2

target max-sparse-size: 256MB

sending 'system' (253347 KB)...

OKAY [ 7.962s]

writing 'system'...

(bootloader) WARNING: System partition size is 0x34800000

(bootloader) Only multiples of 0x1000000 allowed for write-protection

(bootloader) Write protect will not be enabled

OKAY [ 4.650s]

finished. total time: 12.617s

D:\moto\4.4.4 KXB21.14 FR>mfastboot.exe flash modem NON-HLOS.bin

target max-sparse-size: 256MB

sending 'modem' (47152 KB)...

OKAY [ 1.533s]

writing 'modem'...

OKAY [ 0.795s]

finished. total time: 2.331s

D:\moto\4.4.4 KXB21.14 FR>mfastboot.exe erase modemst1

erasing 'modemst1'...

OKAY [ 0.015s]

finished. total time: 0.015s

D:\moto\4.4.4 KXB21.14 FR>mfastboot.exe erase modemst2

erasing 'modemst2'...

OKAY [ 0.012s]

finished. total time: 0.012s

D:\moto\4.4.4 KXB21.14 FR>mfastboot.exe flash fsg fsg.mbn

target max-sparse-size: 256MB

sending 'fsg' (102 KB)...

OKAY [ 0.085s]

writing 'fsg'...

OKAY [ 3.178s]

finished. total time: 3.263s

D:\moto\4.4.4 KXB21.14 FR>mfastboot.exe erase cache

erasing 'cache'...

OKAY [ 0.013s]

finished. total time: 0.013s

D:\moto\4.4.4 KXB21.14 FR>mfastboot.exe erase userdata

erasing 'userdata'...

OKAY [ 0.080s]

finished. total time: 0.082s

with fastboot (same error on device) :

D:\moto\4.4.4 KXB21.14 FR>fastboot.exe flash partition gpt.bin

sending 'partition' (32 KB)...

OKAY [ 0.024s]

writing 'partition'...

This may take a few seconds, if a

different partition table is being

flashed since we need to backup

and restore a few partitions

Flashing primary GPT image...

Flashing backup GPT image...

OKAY [ 0.355s]

finished. total time: 0.380s

D:\moto\4.4.4 KXB21.14 FR>fastboot.exe flash motoboot motoboot.img

sending 'motoboot' (1953 KB)...

OKAY [ 0.097s]

writing 'motoboot'...

flashing tz ...

flashing rpm ...

flashing sdi ...

flashing aboot ...

flashing sbl1 ...

OKAY [ 1.112s]

finished. total time: 1.210s

D:\moto\4.4.4 KXB21.14 FR>fastboot.exe flash logo logo.bin

sending 'logo' (1060 KB)...

OKAY [ 0.081s]

writing 'logo'...

OKAY [ 0.070s]

finished. total time: 0.151s

D:\moto\4.4.4 KXB21.14 FR>fastboot.exe flash boot boot.img

sending 'boot' (10240 KB)...

OKAY [ 0.379s]

writing 'boot'...

OKAY [ 0.654s]

finished. total time: 1.033s

D:\moto\4.4.4 KXB21.14 FR>fastboot.exe flash recovery recovery.img

sending 'recovery' (10240 KB)...

OKAY [ 0.390s]

writing 'recovery'...

OKAY [ 0.660s]

finished. total time: 1.050s

D:\moto\4.4.4 KXB21.14 FR>fastboot.exe flash system system.img_sparsechunk.0

sending 'system' (259277 KB)...

OKAY [ 8.184s]

writing 'system'...

WARNING: System partition size is 0x34800000

Only multiples of 0x1000000 allowed for write-protection

Write protect will not be enabled

OKAY [ 4.918s]

finished. total time: 13.103s

D:\moto\4.4.4 KXB21.14 FR>fastboot.exe flash system system.img_sparsechunk.1

sending 'system' (247529 KB)...

OKAY [ 7.822s]

writing 'system'...

WARNING: System partition size is 0x34800000

Only multiples of 0x1000000 allowed for write-protection

Write protect will not be enabled

OKAY [ 4.171s]

finished. total time: 11.994s

D:\moto\4.4.4 KXB21.14 FR>fastboot.exe flash system system.img_sparsechunk.2

sending 'system' (253347 KB)...

OKAY [ 8.004s]

writing 'system'...

WARNING: System partition size is 0x34800000

Only multiples of 0x1000000 allowed for write-protection

Write protect will not be enabled

OKAY [ 4.652s]

finished. total time: 12.656s

D:\moto\4.4.4 KXB21.14 FR>fastboot.exe flash modem NON-HLOS.bin

sending 'modem' (47152 KB)...

OKAY [ 1.557s]

writing 'modem'...

OKAY [ 0.795s]

finished. total time: 2.352s

D:\moto\4.4.4 KXB21.14 FR>fastboot.exe erase modemst1

erasing 'modemst1'...

OKAY [ 0.014s]

finished. total time: 0.014s

D:\moto\4.4.4 KXB21.14 FR>fastboot.exe erase modemst2

erasing 'modemst2'...

OKAY [ 0.014s]

finished. total time: 0.014s

D:\moto\4.4.4 KXB21.14 FR>fastboot.exe flash fsg fsg.mbn

sending 'fsg' (102 KB)...

OKAY [ 0.087s]

writing 'fsg'...

OKAY [ 3.179s]

finished. total time: 3.267s

D:\moto\4.4.4 KXB21.14 FR>fastboot.exe erase cache

erasing 'cache'...

OKAY [ 0.013s]

finished. total time: 0.013s

D:\moto\4.4.4 KXB21.14 FR>fastboot.exe erase userdata

erasing 'userdata'...

OKAY [ 0.046s]

finished. total time: 0.046s

Also trying EU (image is too large) and Verizon (image is too large + hab check failed for boot/recovery) versions, nothing work :(