I’ve recently updated the firmware and getting the transmission restriction problem even though those frequencies are allowed in my country.
My country is Malaysia (MY). The region that is currently provisioned on my device is R04:MY.
The frequency range 433 - 435 MHz is totally blocked right now, even though those frequencies are allowed in my country.
So, it needs to be unblocked.
Here is the regulatory documents that describe the frequency bands for Malaysia under Malaysian Communications & Multimedia Commision (MCMC).
If this isn’t the right one, let me know so I will search for other documents on regulatory’s website.