Service Tool V3400 Download Better Chip |link| Instant

Resetting the chip doesn't physically clean the ink. If you reset the counter multiple times without cleaning or replacing the internal sponges, ink may eventually leak out of the bottom of the printer.

Before extracting, use PowerShell (Windows) or sha256sum (Linux) to match the hash. A legitimate V3400 executable should have a hash starting with 9F4B... (check community forums for current valid hash).