V9 Prime Upgrade PIN

GTMEDIA V9 super V9Prime

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wlf
Posts: 331
Joined: Wed Oct 05, 2022 9:17 am

V9 Prime Upgrade PIN

Post by wlf »

Dear support,
can you post a image of PIN socket with the TX/RX/GND specification?

Is it like V8UHD?

Thank you, regards.

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CAJE
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Re: V9 Prime Upgrade PIN

Post by CAJE »

JST connections are the same on the motherboard

wlf
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Re: V9 Prime Upgrade PIN

Post by wlf »

Is not clear the orientation; RX pin is the center, TX pin is the front side or rear side?

When I start STB EPROM upgrade tool, at the first next I see "Synchronizing STBs ... Please reset target!" and not skip to download.
How can I reset target; I need to power on? Or is there a procedure to reset target?


Thank you, regards.

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cpr43
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Re: V9 Prime Upgrade PIN

Post by cpr43 »

wlf wrote:
Fri Apr 14, 2023 7:46 pm
Dear support,
can you post a image of PIN socket with the TX/RX/GND specification?

Is it like V8UHD?

Thank you, regards.
Read here:

viewtopic.php?f=51&t=28846

wlf
Posts: 331
Joined: Wed Oct 05, 2022 9:17 am

Re: V9 Prime Upgrade PIN

Post by wlf »

Could you send me a aliexpress link where find a JST 3 pin to buy?
cpr43 wrote:
Sat Apr 15, 2023 2:09 am
Read here:

viewtopic.php?f=51&t=28846
I have connect the decoder like your shema.

I start the STB EPROM upgrade tool 2.2.2.0, at step 1 I configure Port COM3 (windows tell me that USB adapter get COM3 address), bit rate 115200, Parity Even, Operate Mode Upgrade, File I use GTMedia_V9Prime_V175_20220520.bin, Include Bootloader selected. I click to Next and after power on the decoder.
I see "Synchronizing STBs ... Please reset target!"; the process is hold, it goes no further. :(

In front panel I see "boot" and "On"; I must see other?

What is the correct sequence? The decoder must be powered when I start? How can I reset target?

PS. I need to downgrade because the PVR function don't work with Mars and V9 Prime! I need it today.

wlf
Posts: 331
Joined: Wed Oct 05, 2022 9:17 am

Re: V9 Prime Upgrade PIN

Post by wlf »

With Putty and 115200 8Bit 1Stop bit Parity Even I see:

Code: Select all

/r~▒Bnj~~▒B6▒▒+▒▒S▒ZFrBnjN~JzZF▒jF.6~
                                     ~>>:>>6>>z▒▒
For me decoder serial port communicate but I suspect that don't communicate with a right settings!
I suspect that there is a wrong setting and the STB EROM upgrade tool 2.2.2.0 don't communicate with the board. Have GTMedia support tested the procedure? :?:
It is not possible that no one has succeeded to downgrade V9 Prime; could you help me?

How can I downgrade the Mars firmware?

Thank you.

lzp
Posts: 21
Joined: Thu Sep 15, 2022 10:25 pm

Re: V9 Prime Upgrade PIN

Post by lzp »

Boa noite.

Só consegui fazer uma vez:
Flash.bin (com atualização que vai colocar) em um pendrive e
ligando na tomada e dando "boot" pelo controle (tecla power ou menu acho).

gtm9p
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Joined: Tue Mar 01, 2022 12:42 pm

Re: V9 Prime Upgrade PIN

Post by gtm9p »

try this, remove the eeprom from the board and flash the eeprom using ch3410

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CAJE
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Re: V9 Prime Upgrade PIN

Post by CAJE »

It is not necessary to remove the Epron from the board, it works if the clip is not deformed

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