Program IT8886HE with RT809H

[pabloroggeri]

I am trying to program the EC IT8886HE of a Lenovo V310-15ISK with RT809H. (Motherboard DA0LV6MB6F0 REV: E)

According to the programmer's software, it must be connected to the SM BUS of the EC (pins 87 and 88 if I'm not mistaken) through the ISP port of the programmer. However, when I want to read or delete the EC it tells me "bot error"

Someone has programmed these ECs to help me or tell me what mistake I am making. I leave the photos of the connection diagram, the error that appears and the photo of how I connected the ISP cables

Thank you so much

[pabloroggeri]

I had forgotten to put the error message and I take this opportunity to ask if you know which one I have to choose from the IT8XXX since there are 192k and 256k and I don't know which one is correct, I have tried both but it tells me the same error

[pabloroggeri]

Please, can someone with experience using the RT809H help me program the IT8886HE?

[mon2]

Hi. Do not own your hardware but are you sure the SMBUS on the RT809H is correct?

This video shows a side port which is being used by the tech to communicate with the SMBUS slave.

https://www.youtube.com/watch?v=E7pCX7k4Jwk

[mcplslg123]

mon2, the tech you referred with YT video is a genius. have learnt a lot from him. He is from MUMBAI,INDIA

[junior256k]

I casually did try to program an IT8527 with RT809H following the same YT video instructions. I did read sucesfully from battery connector as the video shows.




But in my case, need the power adapter pluggled in when start to read.

Writting is not the same, got an error.

[junior256k]

Now, in your case Pablo, i see you wrote pins 86-87, wich is PS2 DAT and CLK respectivily, but i think are the pins 115-116 from SMBUS of the IT8XXX.
Correct my if im wrong.
I hope this can help others.