Phone not detected in flashtool.
i installed canvas hd update (4.2.1 through flash tool) then updated it to canvas 4 rom a long time back, used it for almost 2-3 months.
Yesterday i found galaxy s4 rom and made a install, it was very laggy and lacked adjustment of templates.
then i planned to switched back to canvas hd official rom, but phone was not detected in flashtool (neither windows recognize new device,windows didn't even tried to install driver).
Using temporary, little customized 4.2.1 hd rom restored via Clock Work Recovery (still getting s4 boot screen.).