/C240 Duo units due to incorrect cell detection (e.g., charging a 2S as a 4S). Always monitor your first few charges after an update. If your charger continues to show "balance errors" or "incorrect cell count" after a firmware update, stop using it immediately. htrc t240 duo firmware update - AliExpress
: Use a high-quality USB-C cable to connect the charger to a Windows PC.
: Once finished, restart the charger and verify the new version on the boot screen. Method 2: SD Card Update (For Specific Hardware) htrc t240 duo firmware update better new
. Testing on 4S LiPo packs has shown accuracy improvements as high as 90%.
: Insert the card, then hold the Power Button down for seven seconds until the screen flashes blue then red. /C240 Duo units due to incorrect cell detection (e
: Get the latest firmware file (e.g., htrc_t240duo_v2.3.0.bin ) and the HTRC Firmware Update Tool (v1.5.2 or newer) from the Official HTRC Website .
, as well as LiFe and Pb batteries, which may not be recognized correctly on older versions. htrc t240 duo firmware update - AliExpress :
: The update resolves a critical bug where older firmware failed to detect minor voltage drifts, which could previously lead to "balance errors" or even cell swelling. How to Check Your Current Version