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Yeti PRO 4000 Firmware Release Notes

• Release Notes
  • 1.8.0
  • 1.7.7
  • 1.7.6 (RECALLED)
  • 1.5.8
  • 1.5.7
  • 1.0.5
  • 1.0.1

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Release Notes

1.8.0

• Roll out started 2025-04-01 (check mobile app for availability)

💪 Improvements/Enhancements

• Adds minimum and maximum cell voltage information to the "Device Info > Battery" menu for both internal battery and connected Tank batteries
• Improves battery management system to better protect against deep discharge
• Enhances LCD display readability:
  • Removes unnecessary leading zeros from power input/output displays
  • Improves error message clarity (e.g., "MPPT COMM ERROR" instead of "COMM1 ERROR")
  • Cleans up message menu formatting

🐞 Bugfixes

• Fixes an issue where the Charge Profile recharge point setting isn't working as expected
• Improves hardware identification system to prevent potential device errors
• Enhances battery monitoring to ensure proper charging behavior, especially during extended AC input connection

1.7.7

• Roll out started 2024-12-16 (check mobile app for availability)
• Roll out completed 2025-01-14 (update available to all users via the mobile app)

🐞 Bugfixes

• FIX - Fixes device hardware identification issues that could lead to the following errors:
  • MISSING SERIAL NUMBER - This error renders the Yeti unable to discharge (via output ports), charge (via input ports), or connect to the Goal Zero mobile app.
  • INV SKU MISMATCH - This error renders the Yeti unable to discharge (via output ports), or charge (via input ports), but it is able to connect to the Goal Zero mobile app. Customers experiencing this error should pair the Yeti with the Goal Zero mobile app and then perform a firmware update to v1.7.7.

[!IMPORTANT] If you are experiencing the MISSING SERIAL NUMBER or INV SKU MISMATCH errors, we have released a beta mobile app that is able to recover the Yeti Serial Number as well as install the v1.7.7 firmware update. Join the Yeti Recovery Tools App Beta program to get access to the beta app. For more information on recovering the serial number, see the Yeti PRO 4000 Help Guide.

1.7.6 (RECALLED)

Released 2024-08-21 Fully recalled 2024-12-16

⚠️ NOTE: Some users have experienced an issue updating to firmware version 1.7.6, receiving a CODE 244 failure message. Please contact our support team by submitting a help request via the mobile app with subject "Firmware Update CODE 244" if you experience this issue, or email us at [email protected]. This issue should be resolvable by our support team. Thanks for your understanding.

💪 Improvements/Enhancements

• Increased inverter high temperature fan enable from 65°C to 75°C
• Inverter fans are disabled during OTA updates to reduce communication noise and power draw
• CHGMOSERR alert
  • Add discharge protections to prevent the battery from reaching low voltages and triggering the CHGMOSERR alert
• Allows AC input detection when battery cell is in Over Voltage
• Improvements to estimated time to empty/full calculations
• Improvements to Energy History data syncing
  • Reduces likelihood of Yeti falsely reporting 0 energy usage.
  • Improved internal data sync, prevents potential data loss.
• Improvements to Wifi/Bluetooth status indication on LCD display
• Improvements to Blackout Mode
  • All LEDs are disabled during Blackout Mode as long as there are no active alert states
  • Red LEDs will show if any alert states are active
  • Power Switch LED is now also off while Blackout Mode is active
• Removes leading zero in battery state of charge on LCD display
• Reduces Wireless Module idle power consumption
• Cloud connection management improvements
  • Improves connection monitoring and reconnect logic
• Improved firmware update queue management
  • Reduce chance of rejecting request to start firmware update
• Disables Wifi Access Point by default

✨ New Features

• LCD Screen Menu Changes
  • Added "Device Info" sub-menus
    • Battery
      • All internal battery + Tank battery info moved here
  • New features added to Settings Menu
    • AC Profile setting
      • Allows user to switch the AC mode to support different regional standards
    • Ground/Neutral Bonding setting
      • Allows user to enable/disable the ground/neutral bonding feature
    • Port Restore setting
      • Allows user to enable/disable the automatic port restoration feature
        • When enabled, the Yeti will automatically re-enable output ports if disabled due to low battery condition
          • Ports will re-enable once the battery has recharged by 5%
  • Adds internal component temperature values to the LCD menus
• Added battery under-voltage alert message

🐞 Bugfixes

• FIX - Energy History data syncing issues
  • Fixes issue where Yeti would falsely report 0 energy usage
  • Fixes issue where Yeti would stop syncing data to the cloud
• FIX - Charge Profile recharge point setting not respected
• FIX - False short-circuit detection on AC output during APS (wall/battery) switchover
• FIX - COMM1 ERROR - Improve data communication analysis to avoid excessive COMM1 ERROR messages
• FIX - Reporting incorrect Battery + Tank capacities to the app
• FIX - Showing incorrect Wifi/Bluetooth blink states on Yeti LCD display
• FIX - User's custom device name gets erased after software reset
• FIX - Yeti may reject a firmware update due to not clearing its queue
• FIX - Yeti LCD displays wrong value of lifetime energy usage

1.5.8

Released 2024-05-24

💪 Improvements/Enhancements

• Improvements to the charging behavior of the HVDC input port
  • prevent over-current in potential ground loop scenarios
  • improved low-current latching behavior for lower voltage input sources

1.5.7

Released 2024-02-28

✨ New Features

• Energy History
  • The Yeti will track energy in, energy out, peak watts in, peak watts out, and state of charge for every hour for the past 2 weeks. It will also aggregate the data into a daily record and keep up to 2 years of daily records! This data is uploaded to the cloud about once per hour if a new record is recorded. This data can be viewed on the "Energy History" screen in the App for any Yeti PRO 4000 device running firmware v1.5.7 or newer.
• RV Escape Screen OTA Firmware Update Support
  • Yeti PRO 4000 can now update a connected RV Escape Screen (RVES) via Yeti over-the-air updates. This will be managed automatically by the Yeti. The firmware version for the connected RVES can be confirmed in the App.
• Yeti now does full reboot when Restart requested from the App
  • Users can now reboot the Yeti from the App. This is available in the "Device Settings" screen.
  • Can be helpful for troubleshooting.

💪 Improvements/Enhancements

• Improved cloud registration
  • Additional retries and checks while getting registered with the App Cloud for the first time during user pair setup
• Improved Wi-Fi connection management
  • Additional services created to monitor and repair Wi-Fi connection.
• Firmware update hardening
  • Additional retry logic during firmware update process.
• Improves onscreen messages for under-voltage, over-voltage, and short-circuit conditions to be more user friendly

🐞 Bugfixes

• Fixes to shared connection state with the App during Cloud setup
  • Leads to smoother Cloud Connect setup
• Fix High-Voltage DC line-loss optimizations in car applications
  • Prevents excessive toggling of the HVDC port when car battery voltage lowers
• Disable car battery low voltage beep on Low-Voltage DC port
• Lowers battery low temperature thresholds to increase usability range in cold environments while remaining within - safe operating limits
• Fixes reported fixed 8W power out on AC port when AC load was anything under 80W
• Fixes reported AC input/output Amps to the App
• Fixes reporting of DC input Amps to the App

1.0.5

released 2023-12-11

💪 Improvements/Enhancements

• Reduced wireless module power consumption
• Optimizations in pre-update checks
• OTA error handling improvements

🐞 Bugfixes

• no longer show disconnected Tanks in the App
• no longer shows deleted networks in the App
• port states will restore after OTA update
• show correct firmware version after OTA update
• fix issue that would show "update cancelled" on the Yeti display
• Fix various notification thresholds
• Improve timing of backend requests after factory reset
• Fix handling of corrupted data from the App leading to unresponsive wireless module
• Fix issue of RVES display Wifi button locking out the wireless module
• Fix high temp while charging through Low-Voltage (8mm) DC Port.

1.0.1

Released 2023-10-03

• See launch features on Goal Zero Product Page