Binding E1524 to group -- slightly different procedure needed

[canton7]

I recently struggled with binding an E1524 to a group, and ended up needing to follow a slightly different series of steps to the docs. I thought I'd write up my findings in case anyone else was hitting the same problem....

I've got an E1524 with 2.3.14. If I remove the device and re-pair it, it sends commands to group 901 as expected. If I tried to unbind the remote from this group, that failed with

Error: Unbind 0x90fd9ffffe532c91/1 genOnOff from '901' failed (Error: status: 136)

After this, the remote sent commands to group 0. If I then attempted to bind it to any other group, that would fail with the same error and the remote would continue sending commands to group 0. The only way to reset it to group 901 was to remove and re-add it.

However, if I removed it, re-paired it, then bound it to my group (without unbinding it from group 901) that would succeed, but the device would still send its commands to group 901. If I then unbound it from default_bind_group, it started sending commands to the right group!

So, the steps were:

1. Remove, re-pair
2. Bind it to the correct group
3. Unbind it from default_bind_group