No specific info about version 4.2. Please visit the main page of RogerISP on Software Informer.
This app can update your Dell 4220 Projector to the latest firmware versions.
It can easily use the ISP function to update the MCU‟s APROM and DataFlash.
This app allows you to install latest firmware for your Flymaster instruments.
An intuitive PC interface for in-system programming of Atmel AT89LP devices.
Programmer for PIC 12, 16 & 18 series Flash,OTP Microcontrollers,etc.
ISP is the acronym of In-System Programming, and makes it possible.