MR5200 Slow data speed since NTGX55_12.04.12.00 firmware upgrade
Hi, I am using a MR5200-100EUS. Until recently I was getting reliable download speed of about 300Mbs. Since the firmware upgrade to NTGX55_12.04.17.00 this has dropped to just 30Mbs. I use external antenna on the roof so signal strength is excellent. Using the SIM card from the M5 in my smartphone I still get 300 Mbs download speed... so it looks like there's a problem with the firmware.
Is there any way to downgrade to the previous firmware until the problem is fixed?
