Hi,
Answering one by one to your question 1 paragraph = another question:
1. PING gives:
PING 8.8.8.8 (8.8.8.8): 56 data bytes
--- 8.8.8.8 ping statistics ---
5 packets transmitted, 0 packets received, 100% packet loss
2. connection randomly dropped... I noticed higher than usual pings on speedtest.net , later connection dropped.
3. Devices was upgraded to firmware 7.3 after first problems with connections appeared. Therefore I would not seek problem with update.
4. I tried with APN provided by tech support from T-Mobile , same results - no webpage is loading
5. I did factory device reset and that did not solve the problem
Q: Is it possible to get the previous firmware to RUTX09?