[gsm_guy1]

C:\Program Files\XTC 2 Tool>htc_fastboot flash zip rom,zip
sending 'zip',,, (66454 KB) FAIL
DOWNLOAD ERROR
Please re-plug your USB cable

FAILED (remote:
DOWNLOAD ERROR
Please re-plug your USB cable
)
Execution time is 2300(ms)

C:\Program Files\XTC 2 Tool>htc_fastboot flash zip rom,zip
sending 'zip',,, (66454 KB) FAILED (data size is too large(66454 KB) for device
to download ZIP file 'rom,zip'
)

(commas=dots)


MODEL : HTC DESIRE 820S DUAL SIM
NAME : A50ML
HBOOT : 3.10.0048
SERIAL : LC58$£^&*(
CID : HTC__044
MID :
BUILD : 1.21.707.1
ANDROID : 4.4.4


Please helllp. How i upgrade hboot?