Hi Wolfram > > I tried it, but same result. > > I see. Do we have a list of changes between ES2.0 and 3.0? We checked difference about I2C/IIC/PFC between ES2.0 and ES3.0, but we couldn't find. So, it seems 1) unknown chip something ? 2) board individual difference ? 3) uboot difference ? 4) difference of mounted / socketed chip I asked to Magnus to enable remote access to my ES3.0 board. You will get announce from him about it.