Reading from the vendor's listing, I bumped into this:
"Bluetooth function must work with KT LCD display"
https://www.aliexpress.com/item/32233107027.html
Oopsie.
Does anyone know the reason and how to revert it? Did I turn these controllers a paperweight?
Is there a way to recover the factory settings of these controllers? The large controller (kt48svprkb-sjt02lb ) I bought with the Bluetooth dongle and the smaller one (kt36/48zwsr-ffF02) came with the bike kit and a LED 900s
Everything was working fine until I switched the input interface...