Many chips have internal status registers that lock the memory. Go to the menu and select Unprotect / Clear Status Register before attempting an erase.
: Many modern BIOS chips (especially in laptops) require 1.8V . Since standard CH341A programmers output 3.3V/5V, you may need a 1.8V adapter to avoid damaging the chip.
Compatible with CH341A , UsbAsp, Arduino-based programmers, and even the Bus Pirate . asprogrammer+21013
[Connect Hardware] ➔ [Select Programmer API] ➔ [Detect IC Identity] ➔ [Perform Read/Verify Backup] ➔ [Execute Clear/Write]
Right-click the ASProgrammer executable and select . Without admin rights, the software cannot access the WinUSB driver stack properly, causing a silent 21013 error on the first read attempt. Many chips have internal status registers that lock
Implementing the approach requires a shift in both tools and mindset.
: Open the main workspace payload file AsProgrammer.lpi inside Lazarus. You can safely dismiss any initial missing component warnings regarding the hex editor environment. Install the IDE Extension : Since standard CH341A programmers output 3
A critical feature for BIOS flashing; it includes an "Unprotect" function that removes write-protection registers from SPI Flash chips before attempting to program.
Why WinUSB? Unlike libusb, WinUSB has better timeout handling, directly solving the 21013 sync errors.