How to Upgrade Using USB to USB

VIM3
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And did you try to close the contacts on the back side of the Board? It helps some people…

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Where of the back side?

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MRegister_ShortCircuit.png806×563

Red rectangle with the letter " M"

MRegister Mode(Maskrom Mode)

  1. Power-on Edge.
  2. Use a tweezer to short-circuit the two pads of M register, then without releasing…
  3. Short press the Reset key and release it to boot into Upgrade Mode (Maskrom Mode).
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for vim3

MRegisterContacts
MRegisterContacts.jpg1280×720 133 KB

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In the video, your card goes into firmware mode.

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I did MRegister Mode already

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@nipon0007 Are you sure that your type-C line has data transmission function? Can we try it instead? I’ve met a couple of unrecognizable data lines because they don’t use data-enabled data lines.

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This my use Type-C

d231f0e98a2eb73b5201ac6afce6f4e4
d231f0e98a2eb73b5201ac6afce6f4e4.jpg600×800 136 KB

I have my friend used VIM3Pro too me.I sent my VIM3Pro to him try to checked&connect by used type-C cable and PC of him,result is my VIM3Pro not connect with PC but VIM3Pro of my friend is connect very easy.I’am verry confused.

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@nipon0007 We have attached a type-C line. Can you try this line?

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I do not understand…
What you meane.

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@nipon0007 When you buy our board, there’s a type-C data line in it.

TIM%E5%9B%BE%E7%89%8720190919111657
TIM图片20190919111657.jpg2121×2828 2.46 MB

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at Khadas shop?

Please Noted : I have try with my friend the VIM3Pro of him is OK, but when i change my VIM3Pro is fail…

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@nipon0007 When you bought this board, was there no data line in the box? Can you boot with SD Card ?

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must be purchased separately.
I need to repair office rom because VIM3Pro no have signal to TV,I can’t upgrade any process.
VIDEO

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@nipon0007 When you use HDMI. Do you use external power Supply .

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Yes, adaptor 12V2A and try change 5V is no signal too