Fix 66 CG solver. in 66 solver but it calls update_3R.
Fix 66 CG solver. in 66 solver but it calls update_3R.

FrontISTR/FrontISTR,FrontISTR/FrontISTR,FrontISTR/FrontISTR,FrontISTR/FrontISTR,FrontISTR/FrontISTR