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CC2538: How to make TC devices join in ZNP2.7.0 (ZigBee 3.0)

Part Number: CC2538
Other Parts Discussed in Thread: Z-STACK

Hello,

previously I've used the ZNP 2.6.3 from the Z-Stack HA 1.2.2a and I could reliably join any TC light bulbs I wanted. After upgrading to 2.7.0 (Z-Stack 3.0.0) this doesn't work anymore.

I found that there might be a new way to start network operation in the 3.0.0. stack? Is this right? (Link) If I try the method described in this thread and try to join a TC device (Philips Hue bulb) I get the following output in the Z-Tool:

<TX>05:33:23.45 COM146 APP_CNF_BDB_START_COMMISSIONING (0x2F05)
    CommissioningMode: (0x02) Network Steering (0x2)

<RX>05:33:23.46 COM146 APP_CNF_BDB_START_COMMISSIONING_SRSP (0x6F05)
    Status: SUCCESS (0x0)

<RX>05:33:23.46 COM146 APP_CNF_BDB_COMMISSIONING_NOTIFICATION (0x4F80)
    Status: 0x00 (Success) (0x0)
    Commissioning Mode: 0x01 (Network Steering) (0x1)
    Commissioning Mode: 0 (0x0)

*** WARNING ***
    Unsupported or unformatted message received.  Raw data: 
    0C 45 CA C8 32 32 F5 51 10 01 88 17 00 00 00 

*** WARNING ***
    Unsupported or unformatted message received.  Raw data: 
    0C 45 CA C8 32 32 F5 51 10 01 88 17 00 00 00 

I also cannot join any other devices via this method. If I stick to the old way which was opening the network via ZDO_MGMT_PERMIT_JOIN_REQ I can join exactly one device, once. If I delete this device or restart the coordinator its not possible anymore to join any devices (no matter if TC or not).

What is also strange is that the way I've done the reset all the time doesnt seem to work anymore. The Network parameters are not cleared anymore and the network state is always restored.

Are there any other major changes in the 2.7.0 changes which break usual operation from the applications using 2.6.3?