The android notebook wifi has difficulty to find the RS2 in Setting/wifi scanning. Mostly it takes more than 15 minutes to get in contact. Other wifi seems to be stronger than the RS2 reciever!
Is it not possible to start Reachview via RS2 bluetooth?
May I ask you to specify the firmware version of your Reach RS2? Do I understand correctly that you have difficulties connecting to the receiver with the hotspot of the device? Is the SIM card inserted in Reach RS2 at that moment?
Could you please specify at what stage the update is frozen? Would you mind checking if moving the receiver closer to the Wi-Fi router helps with the connection speed?