Sorry. should have added more details. I already have a VIA VT6421 - I followed all the instructions for removing its drivers etc.
I think there is something else on my P.C that interferes. If I use something like gamebooster to close down as many background services as possible, then jungleflasher isn't as flaky. But it still slows down mouse movement, looks like it has frozen etc.
Then when I risk flashing, jungleflasher can freeze for quite a few seconds. I have so far managed to flash my drive a few times, but it almost always results in my graphic drivers (ATI) crashing and me having to reinstall them to fix it.
I've tried several versions of the ATI drivers but none help. I have even tried a few versions of Jungleflasher, as some freeze completely, whereas one of the older versions seems to work best.
I have googled the problem many many times and tried every fix. I asked at the JF forums but got no answer there
Short answer, got that VIA card and JF still freezes
Need an alternative method if one exists.