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Setup guide · GivEnergy software

How to Update GivEnergy Firmware — Inverter & Battery Software Guide

GivEnergy firmware updates improve stability, add features, and fix bugs — but they also reset certain settings and occasionally introduce new issues. This guide covers the update process, the one-hour stall rule, and the four settings you must check after every update.
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Book setup supportGivEnergy setup hub
  • Remote portal update — no tools required
  • What to do if update stalls after an hour
  • Settings to verify after every update
System behaving differently after an update?

Firmware updates can silently reset charge schedules, export limits, and EPS settings. If your system stopped working correctly after an update, a remote review identifies which settings changed and restores correct operation.

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Remote update Local USB update Firmware issues Full restart WiFi dongle Charge schedule Export limit Fault codes →
Preparation

Before you update

A firmware update should take 5–30 minutes with a working internet connection. Preparing properly avoids the most common failure modes.

Confirm these before starting
✓System shows as online in the portal
✓Home broadband is stable
✓No scheduled grid events or peak periods
✓Note your current settings (schedule, export limit, EPS)
Avoid updating if
·System is offline or showing connectivity issues
·You're in the middle of an overnight cheap-rate charge window
·Broadband is unstable (intermittent drops)
·A previous update was already prompted and declined multiple times

Note your settings before updating

GivEnergy firmware updates — especially major version updates — can reset the following settings to factory defaults: charge schedule windows and target SOC values, export limit, CT clamp direction, and EPS mode on/off. Screenshot or write down your current settings before initiating an update. This makes it trivial to restore them if they change.

Update procedure

Remote portal firmware update

The remote update is the standard method for most GivEnergy systems. It updates both the inverter and battery firmware in sequence, without any physical access to the equipment.

Step-by-step

1
Log in to givenergy.cloud

Sign in with your registered email and password. Confirm your system is showing as online on the dashboard — live data should be updating.

2
Navigate to My Inverter → Software

From the dashboard sidebar, select My Inverter Card. In the My Inverter section, select Software. If your system is already running the latest firmware, no update option will appear. If an update is available, you'll see an Update button with the new version number.

3
Press Update

Click the Update button. The portal will show 'Updating' status. The process begins immediately. Do not navigate away from the page and do not turn off the system.

4
Wait 5–30 minutes

The update typically completes within 30 minutes. The inverter display may flash, go dark, or restart during this time — all normal. The portal status will change from 'Updating' to showing live data again when complete.

5
Confirm the new version

Return to My Inverter → Software and check the current firmware version. It should show the version you were prompted to update to. If it still shows the old version, the update may have failed — see the stalled update section below.

Common problem

Update stuck — the one-hour rule

If the portal still shows 'Updating' after one hour, the update has stalled. This is a known behaviour — it does not necessarily indicate hardware damage.

Recovery procedure

1
After exactly one hour — restart the inverter

Locate the AC isolator — this is the switch on the wall below the inverter. Turn it off. Wait 30 seconds. Turn it back on. The inverter will restart and attempt to complete or resume the update.

2
Wait 10 minutes and check the portal

After the restart, wait 10 minutes for the system to reconnect and the portal to refresh. Check the firmware version in My Inverter → Software. In most cases, the update completes successfully after the restart.

3
If the inverter still won't come online

Check the inverter display directly. If it shows a fault code, note it and look it up in the GivEnergy fault codes guide. A completely blank display after restart may indicate a more serious firmware corruption requiring manufacturer recovery — contact GivEnergy support or book a remote diagnostic.

Do not restart before one hour

Restarting too early — while firmware is still being written — can corrupt the flash memory and cause more serious problems. The one-hour mark is the safe recovery point recommended by GivEnergy. If the update is 45 minutes in and you're anxious, wait the extra 15 minutes.

Manual fallback

Local USB firmware update — when remote doesn't work

If the remote portal update has failed after the one-hour restart, the next step is a local update via USB. This is the same procedure GivEnergy support walks customers through when escalating a failed remote update. Both the inverter and the battery have their own local update process — they are separate.

Contact GivEnergy for the firmware files first

You can't do this update without the correct .bin files for your specific inverter and battery model. Email support@givenergy.co.uk, describe the failed remote update, and request the local update files. They'll send three files for the inverter (ARMStore.bin, DSPStore.bin) and one for the battery (BMS_ARM.bin). If you're not comfortable opening the WiFi dongle or the battery front cover, contact your installer or book a remote-guided session instead.

Do not use a SanDisk USB drive

SanDisk USB sticks are not compatible with GivEnergy inverters and dongles — they fail to enumerate on the inverter's USB controller and the update will silently not run. This is internal GivEnergy guidance from their support engineers, not yet documented in the public KB. Use a plain Kingston, Verbatim, or no-name FAT32-formatted USB stick instead. 8 GB or smaller is recommended.

Inverter — local update

There's a difference between Gen 2 and Gen 3 inverters. Check the model label on the side of the inverter before starting.

Step-by-step (Gen 3 — most common UK install)

1
Isolate the inverter at the AC switch

Turn off the AC isolator on the wall below the inverter. Wait until the inverter display goes dark before continuing. This protects you and prevents any in-flight portal commands from interfering.

2
Remove the WiFi dongle (two screws underneath)

The dongle slots into a USB port on the underside of the inverter, held in place by two small Phillips screws. Undo them and pull the dongle straight out — don't twist.

3
Plug the dongle into your PC and find MSN

The dongle appears as a small USB drive. You'll see one file named MSN (no extension) — this is the system serial. Keep MSN, delete every other file on the dongle.

4
Copy the two firmware files onto the dongle

Drop the files GivEnergy sent into the dongle's root: ARMStore.bin and DSPStore.bin. Names must match exactly — case-sensitive, no version suffixes. Eject the drive cleanly before unplugging.

5
Re-fit the dongle and screw it back in

Push the dongle home and tighten both screws. Turn the AC isolator back on. The inverter will power up and start reading the firmware files automatically — this takes about 20 minutes. Don't power-cycle in the middle.

6
Verify on the portal once the inverter is back online

After 20–30 minutes, log into givenergy.cloud and go to My Inverter → Software. The version number should now match what GivEnergy emailed you. If not, email support back and they'll guide you through the next step.

Gen 2 inverters — three differences

Gen 2 systems use a slightly different procedure: (1) before starting, locate the DIP switches on the underside of the inverter and flip all of them to the down position; (2) use any blank FAT32 USB stick (not the dongle) plugged directly into the inverter's USB port — the dongle approach doesn't apply on Gen 2; (3) there's no MSN.TXT file to preserve. Otherwise the file names and the wait time are the same.

Battery — local update

The battery has its own internal USB stick mounted on the BMS. Updating the battery firmware locally requires opening the battery's front cover. Only do this if you're confident working with high-voltage DC equipment. If unsure, book an on-site visit.

Step-by-step

1
Isolate the DC MCB and turn off the battery

The DC MCB is the red- or green-handled rotary switch between the inverter and the battery. Flip it down. Then turn the battery off using its own black power button on the right-hand side.

2
Wait one full hour with the system off

This lets internal capacitors fully discharge before the cover is opened. Do not skip this step — GivEnergy's safety procedure explicitly requires it.

3
Open the battery front cover (5 mm allen key)

Once the hour has passed, remove the screws holding the front cover with a 5 mm allen/hex key. Set the cover aside. Inside you'll see the BMS board with a silver USB stick plugged into one of its ports.

4
Remove the silver USB and load the firmware file

Pull the silver USB straight out — don't lever it. Plug it into your PC. Delete every file on the drive, then copy on the file GivEnergy sent — it must be named BMS_ARM.bin exactly. If their email has a different name, rename it. Eject cleanly.

5
Re-insert the USB and turn the battery back on

Push the silver USB back into the same BMS port. Press the battery's black power button. Within a few minutes you should hear a loud beep — that confirms the update has run successfully.

6
Re-fit the cover, restore power, and email GivEnergy back

Bolt the front cover back on. Flip the DC MCB back up. Then email GivEnergy support to confirm the local update is done — they'll verify the new firmware on their end and trigger the battery calibration cycle (this matters: skipping calibration leaves the SoC reading wrong for weeks).

Calibrate the battery after a local update

GivEnergy needs to remotely trigger a calibration cycle after a local battery firmware update — without it, the SoC display drifts and the battery may refuse to charge to 100% or discharge below the cached minimum. Email support@givenergy.co.uk the moment you've heard the post-update beep and put the cover back on, so they can run the calibration that same day.

Post-update

Settings to check after every firmware update

These four settings are most commonly reset by GivEnergy firmware updates. Check them every time — even minor updates can affect them.

Charge schedule

Check all Timed Charge, Timed Discharge, and Timed Export slots are still present and set to your intended times and target SOC values.

Charge schedule guide →
Export limit

If you have a DNO export limit requirement (typically 3.68kW for a standard domestic connection), verify it's still set correctly. A reset to 0 or to the inverter maximum can cause export limit compliance issues.

Export limit guide →
CT clamp direction

The CT clamp direction setting can revert to default after updates. Check the portal Charts for the morning after the update — if the grid line shows the opposite of what you'd expect, the CT direction may have flipped.

CT clamp guide →
EPS mode

If you rely on Emergency Power Supply for power cut backup, verify EPS is still enabled and that the minimum SOC reserve is set correctly after the update.

EPS not working guide →

Also check monitoring connectivity

Some firmware updates affect the dongle's cloud connection behaviour. If the portal shows the system as offline after an update, power cycle the dongle (turn off the AC isolator for 30 seconds). Also check whether your WiFi dongle has a separate firmware update available — dongle and inverter firmware updates are managed separately. See the WiFi dongle guide for dongle-specific update instructions.

Dongle firmware

Dongle firmware is separate from inverter firmware

The GivEnergy portal remote update covers the inverter and battery. The WiFi dongle has its own firmware that is managed separately. For newer AECC dongles, firmware updates are applied via the dongle's local web interface and should only be done when instructed by GivEnergy. For older HF21/HFA21 dongles, the chipset can be updated to T27 to improve compatibility with modern routers.

AECC dongle firmware

Available via the dongle's Software Upgrade page at 10.10.100.254. Only update when GivEnergy advises you to — factory-installed versions are tested for your hardware combination. Uninstructed updates can cause connectivity issues.

AECC dongle guide →
HF21/HFA21 chipset update

The T27 chipset update resolves WiFi connectivity issues on Gen 1 and Gen 2 systems with modern routers. This is a one-time update — after T27, no further chipset updates are needed.

HF21 chipset update guide →
Expert support

System not right after a firmware update?

We restore GivEnergy systems to correct operation after firmware issues — checking what changed, re-applying the correct settings, and confirming the system is working as it should. Remote session, no site visit in most cases.

Book a free remote diagnostic Firmware issue troubleshooting
Related GivEnergy pages
Firmware Issues

Troubleshoot unexpected behavior after updates
Firmware Update Risks

What can go wrong on any brand — and how to recover
WiFi Dongle Firmware

Update gateway and dongle connectivity firmware
All Setup Guides

Complete setup and configuration guide index
FAQ

GivEnergy firmware update — common questions

Log in to givenergy.cloud, go to My Inverter Card > Software. If an update is available, press Update. The process takes 5–30 minutes — do not turn off the system during this time. If no update option appears, your system is already running the latest available firmware.
If the portal shows 'Updating' for more than one hour, turn off the inverter at the AC isolator for 30 seconds, then turn it back on. Wait 10 minutes and check the portal — the update should have completed. Do not restart before the one-hour mark as this risks firmware corruption.
Firmware updates can reset charge schedules to factory defaults. Go to the portal Settings and re-enter your Timed Charge and Timed Discharge slots. Also check your export limit, CT clamp direction, and EPS mode settings — all four are commonly reset by major firmware updates.
Generally yes — firmware updates fix bugs, improve stability, and add features. However, if your system is currently working well, wait a week or two after a major release to allow any early-adopter issues to surface on forums. If GivEnergy pushes the update automatically, you have no choice. After any update, check your four key settings: schedule, export limit, CT direction, and EPS mode. Bear in mind GivEnergy is in administration, so manufacturer firmware support from GivEnergy Ltd is winding down.
The remote diagnostic is free. If an update has reset your schedules, knocked the dongle offline, or left a setting wrong, we put it back right — and if it's a remote fix it's £75, you only pay if we fix it. A genuinely bricked firmware that needs a rollback is quoted first; anything needing an on-site visit is from £245.
Usually the same day. We log into your GivEnergy portal, compare your settings against what a clean update should leave, and put right whatever the update changed — in a 30-minute remote session, with a written summary of what we did straight after the call.
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Need help with a firmware update?

If a firmware update has caused unexpected behaviour, reset your settings, or you're not sure whether to update — we can review your system remotely and advise.

  • Not affiliated with GivEnergy Ltd
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  • Firmware rollback and recovery support

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