Help! reset ZJT-H1 - General Questions and Answers

Hi Guys,
I need a help How to hard reset my new Chinese Phone. ZJT-H1
It's a 1 GHz MTK 6820 processor with Android 4.0.5. More details
Model ZJT-H1
Android 4.0.5
Screen 3.5" Capacitive Touch Screen
CPU MTK 6820/1GHz
2G/GSM 900/1800 MHz
Extended Memory Support TF Card up to 32GB Max
Camera Dual Camera(Front 1.3MP/Rear 5MP with Flash Light, Support Video record)
And also how to updat to the officiel frimware
i need it because i have this prblem
Any help

First go to recovery by pressing Vol+ and power on.
Then you will see a Factory reset choose that and reboot.

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I need it because i was installed a setcpu and it have stop my device than i was reset it to continue, but when i was star it it stop on the android imagem ando do nothing, then i was seach for a rom and i was found one i try install it and it´s ok, but i have a error on my screen, and now i cant reboot my device only isntall a .img rom.
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Hardwaredata​​:
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Hi There,
i found allready no Solution to flash this MTK6582 Device. Have anyone a Idea for me? :crying:
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maybe i find here help . i need multilangual rom
romzj._com/rom/voto.htm
@helpme06
Did you find anything that helped you? I have nearly the same problem. I just got a VOTO V5 Youth Edition from a friend.
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quick specs
cpu : 1.3 GHz Quad-Core MT8382
ram : 1GB
rom : 8GB
3G and it was with android 5.1
it boot and stuck on loading.
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I came here after I tried to replaces internal memory with usb storage.
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well it look like RoverPad Sky Q8 3G is same hardware.
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