skaman, have you tried Littlewriter? It works with the Visoly Extrem Card 64 Mb, 128 Mb, 256Mb, 512 Mb . It's XP compliant too!
http://filetrip.net/file.php?id=564
I haven't found any older versions of the Xtemelinker software on my hard drive. But the latest one, v1.25, was the only one I ever used anyway so you should be fine with that and Littlewriter.
I actually used Littlewriter 1.0.8.3, back in the day, but I think you may need to use a parallel cable and hook a power supply to the Xtremelinker if Littlewriter doesn't work or detect your linker with the USB cable.
And NEVER plug a power supply into the Xtremelinker if you're using the USB connection. It can damage the linker.That's what it says in the Owner's Manual.
That's right, I found the official Visoly Flash Advance Gear Xtreme installation guide PDF file on my hard drive. It tells you how to use the Xtremelinker software. But of course, the tutorial on my website gives you more detail.
I'll upload the PDF manual and Littlewriter 1.0.8.3 to filetrip soon and put the links in my next post.
I haven't used my 512M Visoly Xtreme carts in years. Maybe I'll put it to use again soon! Playing games on the GBA SP is still better than playing games on a smartphone!