Did you do as they requested back in December?
Does not appear that you followed up on that original post, so no surprise that your enquiry was given lower priority.
Did you do as they requested back in December?

Sorry but there is no way to resolve your issue.

My fans spin fine in all modes. The only problem I find is the LEDs being turned off. Otherwise the NAS works perfectly (unless there is something hidden that I haven't discovered yet).TMzethar wrote: ↑03 Mar 2025, 16:12Sorry but there is no way to resolve your issue.
TOS6 has requirements for both NAS batches and BIOS versions. Even if you update the BIOS to a compatible version, the device will still be from an incompatible NAS batch. If you revert the BIOS back to an older version, it will result in even more compatibility issues.
At this point, it is clear that the LED light indicates the issue cannot be resolved.
Additionally, if you encounter a problem with the fan not spinning, try each fan mode one by one to find the mode that keeps the fan running continuously.

In my case this is the response from technical support...lichkingxxl wrote: ↑03 Mar 2025, 17:25My fans spin fine in all modes. The only problem I find is the LEDs being turned off. Otherwise the NAS works perfectly (unless there is something hidden that I haven't discovered yet).TMzethar wrote: ↑03 Mar 2025, 16:12Sorry but there is no way to resolve your issue.
TOS6 has requirements for both NAS batches and BIOS versions. Even if you update the BIOS to a compatible version, the device will still be from an incompatible NAS batch. If you revert the BIOS back to an older version, it will result in even more compatibility issues.
At this point, it is clear that the LED light indicates the issue cannot be resolved.
Additionally, if you encounter a problem with the fan not spinning, try each fan mode one by one to find the mode that keeps the fan running continuously.
My intention is to go back on everything, I want an older BIOS compatible with the serial number of my NAS (I suppose you know which one it came from the factory with), and reinstall TOS 5.1.145, and your technical support does not provide me with any of this.
I repeat, although everything works on my NAS, I don't trust it, and I want to go back to my previous state.
Is it so complicated that you provide me with an old BIOS file? Your technical service tells me that unfortunately they cannot help me (or they do not want to) and they refer me as a solution to this same post that I created. It's simply insane.
Can you provide me with some old BIOSes for my model (F4-421)?
For example, the BIOS of the year 2019, which was its year of manufacture.
I understand your feelings, but you are seeking something that does not exist.lichkingxxl wrote: ↑03 Mar 2025, 17:35 Shameful. Obviously I will throw away my F4-421 and buy one from a serious company.

Support page for that model hasn't been updated with newer TOS builds.

Not really, I installedWindows 11 on my 7th gen i7 and owrks without any error, while here it seems, the risk is quite enormous. Everything from "it works fine" to "lost data" is possible. Microsoft would get a shitstorm, if they would release an update like this.