I just bought a MR200 V1 with custom ISP firmware FlyBox (Romania), and unable to connect to internet, its connecting to 4G network, but no WAN connection.. same as you
I managed to install LEDE but same issue, this is not like a common sim lock modem because I was able to send sms, so the sim is recognised..
Hey Mebarak & Lordcapy,
Im in the same situation with custom Orange Flybox firmware on the MR200.
Main reason for changing firmware is to use modem on a different network since moving to another country. It seems you have some success in connecting with stock TP-Link firmware (or LEDE, im not sure). Did this work with another sim/network?
I manage to flash LEDE from Heinz (btw thanks for that .bin !!) and log into LTE modem GUI. The system is now reading sim from other network (before flybox only gives error incorrect sim). So its connecting to 4G network, but no WAN connection is established. I tried with 3 different networks (the sim's all work in mobile phone). I figure its something with LEDE and some settings still in LTE modem firmware?
Then i used Heinz recovery.bin to flash to TP-Link stock firmware (160412). Not sure if this is also flashing the LTE modem's firmware (doesnt look like it?)
Anyway TP-Link firmware works, but still same problem - it recognizes sim, gives 4G signal strength, but cannot connect WAN. I tried every possible APN setting from provider.
The TP-Link interface has very limited settings (APN, static/dynamic, username, pass & authentication). There is no port selection, dialup number, server settings etc.
My feeling is the network (Orange) is locked down on the LTE modem firmware. Some way with LEDE to patch the firmware or see why the sim is connected but not getting internet?
Or these networks have blocked all IEMI numbers from devices customized from other networks?
Anyone have any luck with trying to open up Orange Flybox MR200 to non-Orange networks?