Topwin Universal Programmer Software: Download !!top!! Upd

After a successful UPD update, back up the entire C:\Topwin folder. If your hard drive fails or you switch PCs, you can restore the fully updated software in minutes without hunting for downloads again.

(if still available):

It supports thousands of chips from various manufacturers, including Atmel, Microchip, and STMicroelectronics. User Interface: Topwin Universal Programmer Software Download UPD