For 25 series flash, click Erase IC. For 24 series EEPROM, erasing is often automatic during write.
NeoProgrammer is a free, feature-rich software application designed specifically for USB-based programmers like the CH341A, CH347, and FTDI devices. Version 2.1.0.19 represents a significant milestone in the software's evolution. It was released to address bugs from earlier versions (e.g., 2.1.0.18) and to expand chip support. neoprogrammer 2.1 0.19 ch341a
If your chip is not listed:
