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Hi,
First,Please download the file: https://www.dropbox.com/sh/cwk4o ... EzlpiLvm6pbmpa?dl=0
The files include: firmware package,firmware tools and Operating instructions. After downloaded,upzip the zip file can get a .img file.
Then,According to the firmware tools operate instruction,you can get the lastest version.
Fina,Make sure the lastest version is: VR0574/3.50.XXX(Settings->About devices)
Don't use this firmware tools in VR0542!!!!
If you have any problem,pleace contact us.
Thanks.
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