RS232 for v8 UHD

V8 NOVA / V8 HONOR / V8 PRO2/V8 UHD / V8X

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slawekkrupa
Posts: 18
Joined: Wed Sep 20, 2023 3:35 pm

Re: RS232 for v8 UHD

Post by slawekkrupa »

CAJE wrote:
Thu Sep 28, 2023 4:55 pm
slawekkrupa wrote:
Thu Sep 28, 2023 12:45 pm
CAJE wrote:
Thu Sep 28, 2023 12:36 pm
I told you yes and you will see that it is very easy
I am currently waiting for the shipment.
I want you to inform me what and how ( step by step ).
I need step-by-step instructions, i.e. how to connect the programmer to the motherboard, what software, how to do the programming, what to install, etc. I haven't dealt with this and I don't want to relive the failure that happened to me with RS232.

Can you prepare such an instruction ( step by step ), surely other users will also be useful.
Here we will provide you with the Software for your programmer and all other details related to the CH341a Universal Programmer.
1 Detect chip
2 Erase chip
3 Verify
4 Load firmware from files
5 Burn chip

When Ch341 is connected to the Box, the display lights up
CAJE Please,

Writing you to write step-by-step instructions I want you to show each step with screenshots of where to connect the clip, how to configure the programmer, how to install the programmer, how to handle the software to install the software. Do it with screenshots ( each stage of programming ). Such pictorial instructions show all the steps which dispel any doubts.

Programming and installation ver. Polish https://www.youtube.com/watch?v=Fsr288NRnHc
Software: https://khandishnetwork.com/dl/neoprogr ... 15-10-2021
Drivers/Software: https://linki.msalamon.pl/ch341a_software
Firmware GTMedia V8UHD: viewtopic.php?f=40&t=19117

My photo motherboard V8UHD:
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a1.jpg
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a3.jpg
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Zrzut ekranu 2023-09-28 235147.png
Zrzut ekranu 2023-09-28 235147.png (84.99 KiB) Viewed 1193 times

sickboy
Posts: 188
Joined: Fri Oct 28, 2016 7:15 am

Re: RS232 for v8 UHD

Post by sickboy »

CAJE wrote:
Thu Sep 28, 2023 4:55 pm
slawekkrupa wrote:
Thu Sep 28, 2023 12:45 pm
CAJE wrote:
Thu Sep 28, 2023 12:36 pm
I told you yes and you will see that it is very easy
I am currently waiting for the shipment.
I want you to inform me what and how ( step by step ).
I need step-by-step instructions, i.e. how to connect the programmer to the motherboard, what software, how to do the programming, what to install, etc. I haven't dealt with this and I don't want to relive the failure that happened to me with RS232.

Can you prepare such an instruction ( step by step ), surely other users will also be useful.
Here we will provide you with the Software for your programmer and all other details related to the CH341a Universal Programmer.
1 Detect chip
2 Erase chip
3 Verify
4 Load firmware from files
5 Burn chip

When Ch341 is connected to the Box, the display lights up
Does this procedure zero out the Serial Number ?

maurofragola
Posts: 22
Joined: Fri Nov 17, 2017 8:32 pm

Re: RS232 for v8 UHD

Post by maurofragola »

no assolutamente non azzera il numero di serie vai tranquillo

slawekkrupa
Posts: 18
Joined: Wed Sep 20, 2023 3:35 pm

Re: RS232 for v8 UHD

Post by slawekkrupa »

I have reprogrammed the chip using the Ch341A programmer. A very simple procedure to convert the software from Ma.s to GTMEDIA. It is important to connect the clip well to the chip on the motherboard of the device. The whole procedure takes a maximum of 5 minutes.

PS- via RS232 cable I think faster and without much stress ( less disassembly and application programming )
Attachments
Zrzut ekranu 2023-10-06 102001.png
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CAJE
网站管理员
Posts: 2622
Joined: Sun Dec 06, 2020 8:00 pm

Re: RS232 for v8 UHD

Post by CAJE »

It also has the possibility to use the JST with UART

kamaku
Posts: 3
Joined: Sat Oct 07, 2023 5:57 am

Re: RS232 for v8 UHD

Post by kamaku »

Uart don't work on my V8 UHD. Don't know what component is W61 , and its not clear how it works on original circuit. Removed original circuit and used a max3232 and now works ok.
Last edited by kamaku on Sat Oct 07, 2023 8:14 am, edited 3 times in total.

kamaku
Posts: 3
Joined: Sat Oct 07, 2023 5:57 am

Re: RS232 for v8 UHD

Post by kamaku »

Edited: Forget that it works, bud also original circuit works, see next post

**********************************************************************************
Uart don't work on my V8 UHD. Don't know what component is W61 , and its not clear how it works on original circuit. Removed original circuit and used a max3232 and now works ok.

Ok W61 is a N-mosfet WNM6001, maybe the original output is for uart at 5v level?
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v8_uhd_max3232_mounted.jpg
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v8_uhd_fail_Txd_uart_schematic.jpg
v8_uhd_fail_Txd_uart_schematic.jpg (2.89 MiB) Viewed 1107 times
Last edited by kamaku on Sun Oct 15, 2023 1:05 pm, edited 1 time in total.

kamaku
Posts: 3
Joined: Sat Oct 07, 2023 5:57 am

Re: RS232 for v8 UHD

Post by kamaku »

Ok today i tested it and original circuit works ok.Tested on COM1 and using a ftdi usb conversor. If someone have a not working pcb, can make photos of components and pcb version.
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components_01.JPG (71.8 KiB) Viewed 1000 times
00_uart_connection.JPG
00_uart_connection.JPG (71.98 KiB) Viewed 1000 times

Boadil
Posts: 8
Joined: Tue Apr 16, 2024 5:31 pm

Re: RS232 for v8 UHD

Post by Boadil »

Cómo resultó todo al final?
Funcionó?

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