Problem with flash huawei e3531

[tam7iti]

Diagnostic port: COM20
DL Ver:2.0
DL Info:
swver:22.521.23.00.1195
isover:
webuiver:
product name:E3531i-2EA
dload type:1
Authority Id:867010027854505,0
Authority Ver:1000


User: tam7iti
User credits: 2
09/06/2016 10:22:58 Starting to write device...
Validating file...
File to write: D:\Huawei_E3531_Firmware_22.318.05.00.00_Universal .dgtk
File version: 22.318.05.00.00
Looking for attached port...
Device has signed firmware
The file has no signature
Error: signature verification NOT passed
09/06/2016 10:23:15 Writing device finished with ERROR

[Valdemaras]

Means firmware not compatible with your device.

[tam7iti]

HELLO
There isn't any firmware signed and compatible with my modem in support area
but my solde of credits is lost 4 credits
thanks

[Valdemaras]

HELLO
There isn't any firmware signed and compatible with my modem in support area
but my solde of credits is lost 4 credits
thanks

Credits were added back.