: Always read the chip and save the data to a .bin or .rom file before making changes. This is your "safety net".

: Offers optimized erase/write/verify cycles, often performing 2–3 times faster than legacy programmers.

If a chip has bad protection bits, Neoprogrammer 21 019 includes a "Force Unprotect" option under -> Security . For hardware lock, try holding the chip's HOLD# pin low during power-up.

To get the "full" experience, you should seek out the latest version of NeoProgrammer from a trusted source and the most recent chiplist.dat file, which contains the core device support. Replacing this file in your program directory is all it takes to update your chip support.