Firmware update failed

• Always check all cable connections. With a Bluetooth connection, stay as close to the product as possible and make sure Bluetooth on your phone is enabled.
• Sometimes you need to remove the Bluetooth pairing from your phone to connect to the product again.
• Updates can also be performed on Windows and MacOS computers.
• Problems with the Bluetooth connection itself are described on VictronConnect does not connect over Bluetooth.

D codes apply to VE.Direct products.

• D3 — no VE.Direct products found.
• D4 — an unknown error occurred; try again and check the product settings after the update.
• D26 — update failed, communication lost. The product may be unusable. Check the connection and power supply, try again, and after a successful update check the product settings.
• D29 — unable to start the update, the firmware file is corrupted.
• D31 — update failed, the product is unusable. Try again and after the update check the product settings.
• D90 — unable to start the update, the firmware is not intended for this product.
• D93 — firmware start-up error after the update. Perform a power cycle (off/on); if that does not help, try the update again, and after a successful update check the product settings.
• D94 — the product has been updated, but there was an error reading the previous settings. Check the product settings.
• D95 — the product has been updated, but there was an error restoring the previous settings. Check the product settings.
• D96 — update failed due to version incompatibility. Perform a power cycle (off/on); if that does not help, try the update again, and after a successful update check the product settings.
• D100 — settings cannot be transferred because the app is not active. Manual action required.

B codes apply to Blue Smart Charger, Smart Lithium and the VE.Direct Bluetooth Smart dongle.

• B2 — Victron BLE service not found. Remove the product from the paired devices list and try again.
• B4 — the product disconnected unexpectedly; pairing information may be invalid. Remove the Bluetooth pairing from your phone and try again.
• B12 — the device was no longer found; it may be out of range. Try again.
• B13 — the product did not start the new firmware.
• B14 — update cannot be started, the firmware is not intended for this product. Make sure you selected the correct update file and try again.
• B99 — the product could not write the firmware to memory. Try again.
• B106 — this firmware is too old; use the latest version and try again.

• An MK3-USB adapter is required to connect to VE.Bus products. MultiPlus and Quattro updates require a separate Firmware guide.
• The update cannot be performed with a VE.BUS BMS connected.
• The update cannot be performed with a DMC connected.
• You can find the MultiPlus card in products.

V codes apply to VE.Bus products.

• V1 — no product detected. Check all cable connections and try again.
• V22 — the MK2/MK3 did not respond. Check all cable connections and try again.
• V23 — the connected product does not match the model specified in the file. Make sure you selected the correct file.
• V25 — the update cannot be performed with a VE.BUS BMS connected.
• V26 — the update cannot be performed with a DMC connected.
• V53 — file checksum error; the file is corrupt or not a valid VFF file. Make sure you selected the correct file.

• In addition to automatic updates, you can manually upload your own firmware file. A manual update is needed when a newer version is available on Victron Professional but not in the current VictronConnect; it also lets you upload a special or unpublished version.
• On a mobile device, start the manual update with the MANUAL UPDATE button. The file list in VictronConnect shows only firmware that matches the connected product.
• On a computer, go to the Product info page, click Update and open the correct file. After the file is opened, a message confirms that it has been added to the library.
• If the device security settings do not allow you to open the file from the browser, open it from the file manager.
• The system file browser shows all firmware files in the folder, not just those compatible with the product — choose carefully. Select the file for the specific product model.
• If the file is incompatible, the “Update Failed” screen shows the reason. The product will not be updated; you can repeat the process with a different file.
• For other products, XUP update files are used.
• X66 — the firmware is not intended for this product (Id). Make sure you selected the correct update file and try again.
• X92 — the update is already running on another interface.

• The product may be unusable after a failed update with loss of communication. Check the connection and power supply. According to the manual, the product can always be recovered.
• Power cycle the device (off/on) and try the update again — the manual recommends this for D93, D96 and when the device does not start after an update. For D93 and D96, check the product settings after a successful update.
• X87 — after the update the device is still in bootloader mode. Try again.
• If the product updated but the settings are wrong: for D94 and D95, check the product settings. For D100, the settings cannot be transferred because the app is not active — manual action is required.