That tsop is supported by raincoat 0.7.
So, here is what i would do.
1) Bridge your write enable points
2) Download a game save (or raincoat package directly if you can find it) like the 007:AUF exploit. Go into the the directories until you find the raincoat directory and all its associated folders.
3) Ftp this folder to your apps location on your hdd. There should be a .xbe in the main folder which will launch linux. Also, put whatever bios you want to use in the appropriate folder. Make sure you download this from a reliable source.
4) Lauch linux and your screen should be black
5) Telnet to linux
6) Change directories to where you have raincoat
7) Flash with raincoat

Done
This is the way that i have always flashed tsops (with raincoat). Essentially once you bridge the write enable points, you should be able to use any of the methods (such as the evox dashboard to flash). Check the pinned tutorials for a much more detailed step by step of how to properly flash.
On another note, since you have a v1.0, you have a 1meg tsop. If i were you, i look into installing a switch (or a jumper to isolate) to split the banks in half, so you have two 512kb banks. This way, if something happens when you flash and it doesnt boot, you can always fall back on the half that you havent altered.
Caster.
Thanks. Good suggestion the one of the switch. In fact I'm applying for a two switvh to split in 4 the 1M TSOP.