With the help of vvdishop.com engineer, my problem was settled.
The problem goes like this: xhorse vvdi prog said chip not connected when i tried to read mcu Tms370 from an Opel 2008. I did desolder chip onto the TMS370 adapter.
Have tested everything possible now. cleaned 100 times but no success. and EPROM is exactly the same as vvdiprog shows
VVdishop.com solution:
Connection is not the problem. You use Opel Immo menu. It is wrong. Don’t put 12v.
Select mcu tms370 it will work.
It work. Xhorse engineer tried it before.