There is always a small risk that a firmware update fails to install correctly. And this usually requires hands-on service by a Bluetti technician. A few months ago there was a technical problem with the Bluetti app updating the AC200Max firmware and this caused many AC200Max devices to require factory service to restore them.
So if you want to update your firmware, it may be the safest option to wait a bit and see if any issues come up in the forums during the next few weeks.
Also, don’t update your firmware if your device works fine and you are in critical need of your Bluetti to be available. For example, if it is your only power source or as backup power for medical devices.
Yes my biggest concern is bricking it and having to freight it back to Sydney (from Adelaide)
I (think) I have sorted the max SoC issue and will test the low SoC grid charge again soon as Winter is on its way down under. I can work around this manually so no real urgency.
@FrankH This update has some optimizations for MQTT connections.
BLUETTI firmware update does not have change log display. System updates are generally bug updates or add new features, and in general are pushed to improve the user experience.
Thank you in advance for your kind understanding.
Sounds like the new firmware is targeting the WIFI connectivity issue between the mobile app and the AC300
Exactly this kind of information I would like to get more proactively und in some level of detail (bugs solved, features added or enhanced, etc.). I don’t mean a log display on the AC300 itself - but a publication in this forum or ona kind of “service/support” area on the Bluetti product site
@dr_torch If there is a big difference in the power display of your AC200MAX, we will have new firmware. But without this problem, it is not recommended to update to the latest firmware. :)
Today I saw another firmware available. Now for DSP module. The version number is 4036.07
What features or fixes are tackled by this one?
And: is there any feedback on the new IOT firmware initially mentioned here (9014.12) ??
@BLUETTI again my request/demand: please provide infomation on new firmware far more pro-activly. Information about new versions available and detailed information about feature enhancements or bugs fixed.
I updated my AC300 to 9014.12 because i had some trouble with the bluetooth connection. After the update the bluetooth connection is even more unstable. @BLUETTI ist there a way to downgrade back to 9014.10?
@tobias77 I’m very sorry, the machine cannot be downgraded after IOT upgrade.
What is the unstable Bluetooth connection you are referring to? Does it disconnect frequently?
No, I haven’t. The unit is off most of the time because it has too much idle power drain to use as UPS. I’m using it as offline backup power source now.
More than 40 watts. It’s hard to measure because in UPS mode the unit will continuously drain the battery from 100% to 99% and recharge it. This is because the AC300 and battery internal electronics always use battery power even when utility power is good. This creates quite an overhead and slightly wears out the battery over time. Details here:
If you have 2 watt meters that can measure consumption over time, you can plug that into the input of an AC300 and another one of those on the output and compare the difference after a day. I only have 1.
Thanks.
Coincidentally, just yesterday, after a battery recalibration and charging both B300 to 100%, I decided to apply the Firmware. Other than a nervous pause halfway through, all good now.
I can’t say I noticed any difference and unfortunately it doesn’t seem to have fixed my issue with the batteries being out of sync.