huawei y530-u00 please help me…

hello to all. i have one huawei y530-u00 branded by italina service provider TIM.
this phone have one problem. when i try to update/restore teh firmware because the phone is lock,the phone switcth off by battery low level. now when i try to connect the phone to charger it appear doesn’t work …and when i try to connect the phone to my pc i can see: "qhsusb_bulk.".
now is impossible for me to update/restore the phone.
who can help me? i think is a problem by bootloader that doesn’t works fine.
sorry for my bad english , i’m italian…so please help me…
thank you very much..