Abstract: A method (50) of and a server (19) and network node or client devices (3, 5) communicatively interconnected in a network (1) and arranged for over-the-air, OTA, data upgrade or update of client devices. In the event of a timeout (54) at the server (19) waiting for a response or request message from a selected OTA client (5) during an ongoing OTA data upgrade, the OTA server (19) checks whether a network address change (51) of the selected OTA client (5) caused the OTA server to timeout.

Abstract: A method is outlined for controlling a node to a join a wireless network, which increases the speed of the wireless network commissioning procedure by reducing the chance of congestion. This is achieved by differentiating the joining time of nodes attempting to join the wireless network. Nodes indirectly communicate by transmitting beacon request messages to nodes of the wireless network, which results in the transmission of beacon messages by nodes of the wireless network. These beacon messages can be received by all nodes attempting to join the wireless network. Therefore, the beacon messages can be utilized as an indicator for nodes attempting to join the wireless network as to the number of other nodes attempting to join the wireless network. Based on this indication, the node can be controlled to wait for a further length of time, or to join the wireless network.

Abstract: The present disclosure provides a rework device and a rework method useful in reworking a shingle cell module. The rework device includes a first supporting component, a second supporting component and a heating component disposed between the first supporting component and the second supporting component and being flush with the second supporting component. The first supporting component is inclined at an angle with respect to the heating component. This type of rework device and rework method has the advantages of simple structure, low cost and convenient operation.

Abstract: A method (50) of and a server (19) and network node or client devices (3, 5) communicatively interconnected in a network (1) and arranged for over-the-air, OTA, data upgrade or update of client devices. In the event of a timeout (54) at the server (19) waiting for a response or request message from a selected OTA client (5) during an on-going OTA data upgrade, the OTA server (19) checks whether a network address change (51) of the selected OTA client (5) caused the OTA sewer to timeout.