FoxESS Community - Owners & Installers Forum

The app has started offering this as an update from 2.03.
Anyone know what it brings?
Anyone updated yet?

I found an answer:
The firmware update for the FoxESS **WLan-WW (Wi-Fi+LAN)** datalogger from version 2.03 to 2.05 is tied to the rollout of **FoxCloud 2.0**.
While version 2.03 established the baseline framework to support Fox's new architecture, moving to **2.05** introduces key stability and performance optimizations.
### 1. Support for FoxCloud 2.0 Real-Time Data (5-Second Polling)
FoxESS shifted its cloud infrastructure from 3-to-5 minute data reporting intervals to **5-second near real-time live energy flow visualization** on the FoxCloud V2 app.
* **The Change:** While 2.03 was the technical minimum requirement to unlock this, **2.05** includes crucial data-handling efficiency updates. Because the logger is sending data significantly faster, 2.05 optimizes internal bandwidth so the hardware handles the massive increase in packets smoothly.
### 2. Upgraded Cloud Failure Retry & DNS Logic
* **The Change:** Firmware 2.05 introduces an improved **DNS resolution and cloud server connection retry mechanism**.
* **The Benefit:** If your home Wi-Fi drops or the FoxESS servers experience temporary glitches, the datalogger will reconnect much faster and more intelligently rather than hanging or locking up, reducing the "Device Offline" warnings in your app.
### 3. Smart Standby and Data Filtering Fixes
* **The Change:** Resolves a known glitch where some dataloggers would fail to drop offline or would pass "ghost" data packets back to the cloud when the inverter transitioned into a low-light standby or sunset mode.
* **The Benefit:** 2.05 enforces stricter "data sample age" checks (ignoring data older than 5 minutes during grid transitions), which ensures your nightly or winter historical logs don't show flatlined erroneous curves or false production spikes.
### 4. Transition to Fox OpenAPI V1
* **The Change:** Under the hood, FoxESS is phasing out its legacy OpenAPI V0. Version 2.05 optimizes the datalogger's firmware to fully support the newer **OpenAPI V1 protocol**.
* **The Benefit:** This vastly improves the responsiveness and startup speeds for users integrating their FoxESS systems with local smart-home platforms like Home Assistant.
> **Note:** For the 5-second live data visualization to fully activate, your **Inverter Manager Firmware** must also meet the minimum version requirements (e.g., Manager v1.66 or higher for H1-G2 series). If you update the datalogger to 2.05, it is recommended to ensure your inverter is updated as well to maximize system compatibility.
>
It's AI generated so I wouldn't assume it's fully accurate.