How to Upgrade Using USB to USB

[sliderf]

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

[nipon0007]

@sliderf

the contacts on the back side

Where of the back side?

[sliderf]

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).

[Vladimir.v.v]

for vim3

[sliderf]

In the video, your card goes into firmware mode.

[nipon0007]

I did MRegister Mode already

[Frank]

@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.

[nipon0007]

This my use Type-C

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.

[Frank]

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

[nipon0007]

I do not understand…
What you meane.

[Frank]

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

[nipon0007]

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…

[Frank]

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

[nipon0007]

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

[Frank]

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

[nipon0007]

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