Guides
Step by step, for when you are building or fixing something.
Every app and system code in MewTools: not running as admin, missing files, no internet, high ping, refresh rate, sleep and USB power saving.
phantom · Oct 3, 2026
Every setup pack and optimizer code in MewTools: failed downloads, restore points, tamper protection, Defender and startup apps, with fixes.
phantom · Oct 3, 2026
Every MAKCU and FERRUM code in MewTools: device not found, COM port 10 or higher, port busy, cursor not moving and a failed MAKCU flash.
phantom · Oct 3, 2026
Every flashing code in MewTools: wrong file, firmware for another chip, a failed flash or a check that didn't match, and how to fix each.
phantom · Oct 3, 2026
Every driver code in MewTools: FTDI, CH347 and CH343 missing, failed downloads, Windows Update swaps and WinUSB for the JTAG port.
phantom · Oct 3, 2026
Every card error code in MewTools, from no DMA card found to a slow speed test, with what it means and the steps to fix it.
phantom · Oct 3, 2026
Posts
Help deciding what to buy.
MewTools is our free Windows app for your second PC. It checks your DMA card, reads the DNA ID, runs the speed test, flashes firmware and sets up drivers.
phantom · Oct 3, 2026