LwM2M with BC660K-GL board

I am currently working with the BC660K-GL module and implementing LwM2M functionality. I need clarification regarding several points:

Leshan Server does not accept reading instance with multiple resources (such as 10265/4/0) when sending 265 packet in CBOR.
-Which AT command is responsible for sending the response request to the LwM2M server when dealing with multiple instances?
For example, how can we send a response for 256 instances of a single resource?

-Does the modem support sending data in TLV, SenML_CBOR, and JSON formats?
If yes, how can this be configured or achieved?

-How can we perform Block-wise Transfer (e.g. for large payloads)?
In which document can we find the details and corresponding AT commands?

I have reviewed the following document:
LwM2M Application Note – NB-IoT Module Series (Version: 1.2, Date: 2024-12-05, Status: Released)
as well as the release notes for BC660K-GL, but I could not find the specific information related to these points.

Could you please advise:

  • Which document or section contains these details?
  • Provide the exact AT commands or examples if available.

Thank you for your support.

Could you provide more log information?