Following is a question asked by one of autocardiag.com customers “Today,Received my Red kess 5.017 + KTAG 7.020 from autocardiag.com,i cant wait to give it a shot,but help zip file on both cds says corrupt.Installed 2.23 software, but does not work. All items greyed out.What’s wrong ? Pls help asap,thanks ! “ And following is my answer with fixing method. First,pls trust,all KESS 5.017,KTAG 7.020 With GPT Cable at autocardiag.com were top quality and will 100% workable and our products have been tested by many tuners with a good reputation.So,if you happed to meet the KESS,KTAG Installation corrupt problems unfortunately,pls dont worry, the problem mainly was resulted from wrong operation and you can follow below steps to fix your problems. Step 1 : Pls clean your computer first,uninstall all old and before installed kess,Kag software Step 2 : Re-start your computer Step 3 : Put CD in , and install it without internet, (some customer install is gray,because the pc ip is locked,by original , maybe you used original tools on it before,or maybe you update kess/ltag before…..) Step 4 : Connect with kess,ktag. Note : kess and ktag cannot install in 1 computer Step 5 : Just Follow the…