J500fn deadboot repair

[pachicoo]

Hi riff team,
i am trying to boot repair via rj45 direct emmc but its not making connection i have tried every thing but nothing plz need hlep any way to connect it.

[Legija]

Select RJ45 interface first. JTAG interface is selected on above screenshot.

[pachicoo]

Select RJ45 interface first. JTAG interface is selected on above screenshot.

yes i have selected but same problem have tried every thing but cant connect same problem with lg h791h

[mtk6572s4clone]

Try selecting most low Clock option according to your connection method:

RJ45 Port= 40KHz
or
JTAG Port= 10KHz

[pachicoo]

Try selecting most low Clock option according to your connection method:

RJ45 Port= 40KHz
or
JTAG Port= 10KHz

same problem buddy

[mtk6572s4clone]

same problem buddy

-Voltages are fine?
-Have you ever successfully connected an emmc on riff 1?
-you have another emmc box?, connect well?

[Legija]

His box is ok, already tested some models via remote helper.

Here just few things can be wrong:
1. Pinout
2. Connection
3. Power

I already explained in another topic what is required for ISP connection:
1. Power (VCC) ONLY for eMMC (not for whole board)
2. Stable VCCIO (VCCQ) sometimes higher than declared - if 1.8v doesn't work properly, sometimes need to supply 2.0 or 2.2 or more.

[pachicoo]

His box is ok, already tested some models via remote helper.

Here just few things can be wrong:
1. Pinout
2. Connection
3. Power

I already explained in another topic what is required for ISP connection:
1. Power (VCC) ONLY for eMMC (not for whole board)
2. Stable VCCIO (VCCQ) sometimes higher than declared - if 1.8v doesn't work properly, sometimes need to supply 2.0 or 2.2 or more.

yes you are write but i have tried all but unable to connect it and pinout are also good and have connectivity

[ernestico911]

yes you are write but i have tried all but unable to connect it and pinout are also good and have connectivity

you have to repeat same process again and again till works, that's what i did and it worked finally

[BOSS2017]

yes you are write but i have tried all but unable to connect it and pinout are also good and have connectivity

Hello, Please do this....
Just Remove CLK Resistor then try to Connect with same connecetion...
After Opaeration done must replace clk registor or make a jumper...