Thanks for checking this - and glad you got it working! So you checked the pins? Do you see anything happening at all on 2v05, or is it sending data but not the right data?
As far as I know nothing has changed on OneWire - however because the Bluetooth stack jumps in and does some work in the background, ongoing Bluetooth connections can cause it to be unreliable - that might be what you're hitting here.
I doubt anything if different between versions but if you're connected (especially if you sent something to it in the last 2 minutes so it's still in the 'high speed' Bluetooth connection mode) then you will probably see some unreliability.
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