Confused on using PETG in X2D on Aux nozzle

I have the X2D and wanted to print PLA on the main nozzle and use PETG for supports on the Aux nozzle as mentioned in the promo video’s

The problem is that when I load PETG into the Aux nozzle, the printer give me an error message saying I can’t use PETG. I don’t get any errors if I load it into the main nozzle.

Looking at this page X2D Filament Compatibility Guide | Bambu Lab Wiki I see

And for the Aux Hotend:

PETG on the Main Hotend the support is listed:

and if the filament track switch is installed then on the Main hotend the support is:

So the top table states PETG is not recommended … not NOT restricted. Why can’t I use PETG in the Aux?

I don’t want to use PETG on the main and PLA on the Aux if my supports are PETG and the model is PLA.

What do I do?

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Just noticed there is a firmware update. I updated and now it lets me choose PETG but there is a warning that the quality will be reduced. Yay!

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Coming from Prusa The thing I’ve found confusing on that page is the changes to filament compatibility after installation of the FTS. Hopefully people will put me straight on how it all works.

Ya, it is weird that by adding a FTS, the filament support for the printer are improved … Not sure how that works.

Once again, next to other users’, your post adds to the increased feeling that the inclusion of the auxiliary nozzle in the X2D was a later stage addition, very much like an afterthought prior to launch, to make it commercially enticing for buyers, instead of a real commitment to a thorough R&D process. Looking at their X2D (mechanics + electronics, and especially it’s backside additions), it seems to me that it’s more a melange of items put together in haste, using the X1C as the starting base, with some cosmetic and a few tech/software changes, among these, an auxiliary nozzle thrown in as an afterthought, just to have something “new” to launch as replacement for X1 series. What a bummer this thing is, and what balls Bambu has to sell this crap as the worthy successor of the, now legendary, X1C.

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I could agree, except for the price. That is the key thing for most people. Forgetting the aux extruder, you are still getting a lot of machine at a very reasonable price point.

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Surely it is the P2S as the starting base? The second nozzle is the only part that was perhaps added in haste. The extractor and heater look like they could be sold as upgrades for the p2S. The second nozzle does feel a bit hacky, but it works, and the whole printer costs a lot less than the X1C while being better. Maybe not a huge leap, but still better.