mobile

Hey xda,

I rooted my friends phone a couple of days ago and he also wanted me to install a rom on his phone. i downloaded the twrp app and installed it as the app said. the day after, the would not start up and just viewing an error: image signature verify fail. someone with same problem told me i had to unlock the bootloader and the problem would be solved. I unlocked the bootloader with an unlock code and fastboot. but now it doesn't start up either! when i hold the power button it sais ascend and then it turns black. the hardware buttons light up. if i look in fastboot it shows the bootloader is unlocked but I can't acces it. I can only go into the purple screen (download mode?) that blackscreen and i guess fastboot because i can see it if i type 'fastboot devices' in cmd window. I have tried to wipe all data with cmd by typing 'fastboot -w' but it still doesn't start up

I need help now because I don't want to buy my friend a new one. it's a huawei g510-0100.

A reply would be much appreciated.

thanks,
Lars