SR4 Max

2024 - 2025

Scooter

Firmware versions

How to find your bike's versions

The SR4 Max owner's manual puts every version number under My motorcycle in the TFT menu (PDF page 22). Newer firmware may arrange the menus differently. If yours doesn't match anything below, send us the values with your build date.

HW, OS, HMI and MCU SW are the four version strings the bike shows. Confirmed and Reported say how sure this site is of a row; Source says where the values came from.

Production date	HW	OS	HMI	MCU SW	Source
from Jan 2026 HW SS621-L7 OS SS621X13-OS-V2.3.1 HMI SS621X13-HMI-V1.1 MCU SW SS621X13-02	SS621-L7	SS621X13-OS-V2.3.1	SS621X13-HMI-V1.1	SS621X13-02	Confirmed Source: owner-reported	Notes for SS621X13-HMI-V1.1