[Q] help! ls980 fastboot started,no download mode,no recovery mode! topic

hi, guys. several days ago my ls980 got a issue of keep restarting, and then i paid for a guy to fix it. he installed the tot first but it didn't help.so then he used fastboot to boot sth, he told me that s install the partitions.and after that, my phone can't connect to sprint, no phone call no 3g network no message ,even no wifi.no download mode, no recovery. and he just returned my money and said he can't fix it. i don't know what to do with my phone, so i used flashify to boot the partitions that i got from this page http://forum.gsmhosting.com/vbb/9820568-post6.html which is for ls980 v8, and then the phone got to the "fastboot started". i tried a fix tool for that but it didn't work,i cant even get into the download mode. come someone to help me please ! im really hopeless,.thanx.