# Firmware Updates to Quattro: What was changed? **URL:** \ **Category:** Q&A and troubleshooting\ **Tags:** quattro-ii, beginner, cerbo\_gx\ **Created:** [30 September 2025 05:45 UTC](https://community.victronenergy.com/t/firmware-updates-to-quattro-what-was-changed/46226 "2025-09-30T05:45:31Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![STosen](https://avatars.discourse-cdn.com/v4/letter/s/e95f7d/32.png) [@STosen](https://community.victronenergy.com/u/STosen)\ **Post date:** [30 September 2025 05:45 UTC](https://community.victronenergy.com/t/firmware-updates-to-quattro-what-was-changed/46226/1 "2025-09-30T05:45:31Z")
I recently updated my firmware: Cerbo GX: v3.66 Quattro 48/8000/110-2x100 rev2: v588 SmartSolar MPPT RS 450/100: v1.26 ESS active. I have noticed some changes. Normally the SOC is between 75 and 80% by 07:30. It is now 100%. There is no power from the PV Charger. I normally change the inverter mode to inverter only and hence stop the power coming in from the grid. The PV Charger then starts bringing in power. I have just (07:40) switched the mode to On and the PV Charger does not bring in power. 100 - 120W coming from the grid. What has changed, and why? ![image](https://europe1.discourse-cdn.com/victron/original/3X/6/2/62507ac71342c5b83f309d00eb99178e77a7903d.png) Mode: On ![image](https://europe1.discourse-cdn.com/victron/original/3X/0/9/096bed6f2755b85adfcd88cebb438ee40b746331.png) Mode: Inverter only. ---
**Author:** ![mac](https://avatars.discourse-cdn.com/v4/letter/m/cc9497/32.png) [@mac](https://community.victronenergy.com/u/mac)\ **Post date:** [30 September 2025 06:46 UTC](https://community.victronenergy.com/t/firmware-updates-to-quattro-what-was-changed/46226/2 "2025-09-30T06:46:12Z")
After a firmware update on a quattro it is reset to factory defaults, [see manual](https://www.victronenergy.com/media/pg/VictronConnect_configuration_guide_for_VE.Bus_products/en/firmware-updates.html#UUID-ffb3824e-89bc-2ffa-b183-d04c22757bad). This means you have to restore from a backup or go through the setup process again. ---
**Author:** ![STosen](https://avatars.discourse-cdn.com/v4/letter/s/e95f7d/32.png) [@STosen](https://community.victronenergy.com/u/STosen)\ **Post date:** [30 September 2025 07:11 UTC](https://community.victronenergy.com/t/firmware-updates-to-quattro-what-was-changed/46226/3 "2025-09-30T07:11:09Z")
Thank you kindly. I will look into this. ---
**Author:** ![STosen](https://avatars.discourse-cdn.com/v4/letter/s/e95f7d/32.png) [@STosen](https://community.victronenergy.com/u/STosen)\ **Post date:** [30 September 2025 08:40 UTC](https://community.victronenergy.com/t/firmware-updates-to-quattro-what-was-changed/46226/4 "2025-09-30T08:40:39Z")
Quite correct, I see that the last version (RVCS file) of the settings is not compatible with the firmaware and will have to go through the setup again using VE Config 3 and then download the RVSC file as a backup. ---
**Author:** ![STosen](https://avatars.discourse-cdn.com/v4/letter/s/e95f7d/32.png) [@STosen](https://community.victronenergy.com/u/STosen)\ **Post date:** [30 September 2025 11:45 UTC](https://community.victronenergy.com/t/firmware-updates-to-quattro-what-was-changed/46226/5 "2025-09-30T11:45:41Z")
Managed to get that sorted out. The problem was when I tried upload the last VE Config file an error message came up indicating that is was not compatible with the firmware - a direct link between the firmware and the VE Config file. This meant I would have to download the default VE Config file on the VRM Portal and apply the settings from the last VE Config file. I opened both files and ensured I appled the settings from the old file and then uploaded. It is looking good so far with a little (30 - 100W) power being fed in from the grid. I will need to check tomorrow morning to see if ESS #1 and 2 display when the SOC is below 100%. I have not inculded the firmware version in the configuration filename. @Mac, once again, a hearty thanks for your information. ---
**Author:** ![STosen](https://avatars.discourse-cdn.com/v4/letter/s/e95f7d/32.png) [@STosen](https://community.victronenergy.com/u/STosen)\ **Post date:** [1 October 2025 05:43 UTC](https://community.victronenergy.com/t/firmware-updates-to-quattro-what-was-changed/46226/6 "2025-10-01T05:43:27Z")
This morning the inverter is “behaving” as expected.