A developer decompiles the original Epson binary, finds the subroutine that checks the chips, and replaces it with a NOP (No Operation) command. Essentially, they tell the CPU: "Skip the chip check and assume full."
VERIFYING FIRMWARE...
A chipless XP-7100 is a goldmine for bulk printers. You can advertise it as "unlocked" and demand a higher price in niche printing communities. xp-7100 chipless firmware
Every official Epson 702 (or 702XL) ink cartridge contains a tiny silicon chip. When you insert the cartridge, the XP-7100’s firmware reads this chip to confirm: A developer decompiles the original Epson binary, finds
However, dedicated communities on GitHub and printer forums continue to reverse-engineer each new Epson firmware update. As of 2025, chipless firmware remains available for the XP-7100, but new printers ship with encrypted bootloaders that are nearly impossible to patch. You can advertise it as "unlocked" and demand