Flashing at 750,000 baud does not increase voltage, current, or flash wear. Flash memory endurance is measured in write/erase cycles (typically 10,000 cycles), not speed. The only risk is communication errors, which the tool handles via checksums and retries.
He scrolled through a directory of cracked executables and leaked engineering suites until he found the icon: a jagged lightning bolt over a chip. The filename was simply: . flash loader tool 750 hot