Original firmware as in ZYS2, or ZYS5? Gawd, someone please back up ZYS5 and send it to me!
Instructions for Backing Up:
Download
this and put everything in it onto a floppy disk. After you have done this, you will have a boot disk with mtkflash.exe on it. Now turn off your computer. while the computer is off, insert the boot disk that you made into the floppy drive and turn the computer on. Your computer should detect the boot disk during the startup process and you should end up at a screen where you can choose from four boot options. You want none of those four options, instead, press Shift+F5 to get to the command prompt. You should end up at the "a:/" prompt and when you're there type "mtkflash 'x' r /b /m c:/back.bin". type either 1, 2, 3, or 4 in place of 'x' where you use 1 if the drive is on the primary channel and is set as master, 2 if it is on the primary channel set as slave, 3 if it is secondary master, and four if it is secondary slave. You can find out these things by looking at where the ribbon cable plugs in at on the motherboard, and by looking at the jumpers on the back of the drive. You may need to look at your motherboard's manual to find out which plug is primary and which is secondary, and you may also need to look at the sticker on top of the drive to see how the jumper is set for master, slave, or cable select. After the backup is done, the firmware binary will be located at on your c drive and will be called back.bin. so you can find it at c:/back.bin
