Download & Installation

Download “U1_1.5.2-paxx12-21_multiACE0.99.6.2b” U1_1.5.2-paxx12-21_multiACE0.99.6.2b.zip – Downloaded 67 times – 232.26 MB
Download “U1_1.4.1-paxx12-20_multiACE0.99.6.b” U1_1.4.1-paxx12-20_multiACE0.99.6b.zip – Downloaded 144 times – 261.26 MB
Download “U1_1.4.1-paxx12-20_multiACE0.99.5b_prerelease” U1_1.4.1-paxx12-20_multiACE0.99.5b_pre.zip – Downloaded 292 times – 261.18 MB
Download “Firmware U1_1.4.1-paxx12-20_multiACE0.99.3b.zip” U1_1.4.1-paxx12-20_multiACE0.99.3b.zip – Downloaded 593 times – 261.15 MB
Flash the mUlt1ACE firmware on your Snapmaker U1

Installing the mUlt1ACE firmware is quick and needs no tools or terminal. Just grab one of the firmware files above, picking the build that matches the PAXX firmware you want to use as your base, and follow the steps below.

  1. 1Save the firmware to a USB stick

    Copy the downloaded .bin file onto a USB stick that is formatted as FAT (FAT32).

  2. 2Plug it into the printer

    Insert the USB stick into the rear USB port of your Snapmaker U1.

  3. 3Open Settings

    On the printer's display, tap Settings (the icon on the left, in the middle).

    Open Settings on the Snapmaker U1 display

  4. 4Go to About

    Scroll down until you reach About, then tap it.

    Tap About in the settings menu

  5. 5Tap the firmware version

    Tap the number shown next to Firmware Version.

    Tap the number next to Firmware Version

  6. 6Start a local update

    In the top right corner, tap Local Update.

    Tap Local Update in the top right

  7. 7Select the firmware file

    Pick the .bin file you just saved to the USB stick.

    Select the firmware .bin file from the USB stick

  8. 8Confirm

    Tap Confirm to start the installation.

    Tap Confirm to flash the firmware

  9. 9Open Settings again

    Once the printer has rebooted, open Settings again (same icon as in step 3).

  10. 10Go to Maintenance

    Scroll down until you reach Maintenance.

    Scroll to Maintenance in the settings menu

  11. 11Open Advanced Mode

    Tap Advanced Mode.

    Tap Advanced Mode

  12. 12Agree and open

    Select Agree, then tap Open.

    Select Agree and tap Open

That's it. mUlt1ACE is now installed on your Snapmaker U1.

Use at your own risk. mUlt1ACE is a community project, built by hobbyists for hobbyists. Flashing custom firmware can fail and may render your printer unusable, may affect your manufacturer warranty, and Snapmaker support generally cannot help with a modified printer. The software comes without warranty (GPL-3.0 §15-17). I do my best, but the responsibility for using it stays with you.

Source: decay71/SnapmakerU1-Extended-Firmware