There are two types of upgrades on the Mars Hydro App: 1. Proactive Upgrade: Ensure that the device is connected to WiFi. Access "Me→Equipment Settings→Equipment Update". Refer to this video tutorial for detailed instructions: [https://youtu.be/EQHmQvPeBIA]. 2.Mandatory Upgrade: During the initial connection of the device to your WiFi, the app will automatically initiate a mandatory upgrade for your device. After entering your WiFi account and password, the app will switch back to the device scanning interface and begin the OTA mandatory upgrade process. The upgrade typically takes 2-3 minutes. After completion, please reconnect your device to WiFi.