Mateusz wrote

Region : Argentina

Model : TL-MR3220

Hardware Version : V2

Firmware Version :

ISP :

Region : Poland

Model : TL-MR3020

Hardware Version : V1

Firmware Version :

ISP : Plus

I upgraded the firmware to the newest version.

I use ZTE MF821 which is on the compatibility list.

Modem is 100% OK.

####################################################################
# TL-MR3020 System Log
# Time = 1970-01-01 0:13:27 808s
# H-Ver = MR3020 v1 00000000 : S-Ver = 3.14.2 Build 120817 Rel.55520n
# L = 192.168.0.254 : M = 255.255.255.0
# 3G : 3G = 0.0.0.0 : M = 0.0.0.0 : G = 0.0.0.0
####################################################################

1st day 00:00:07 OTHER INFO System started
1st day 00:00:15 3G/4G NOTICE main 86 process is running, return.
1st day 00:00:17 3G/4G NOTICE main 86 process is running, return.
1st day 00:00:17 3G/4G NOTICE main 86 process is running, return.
1st day 00:00:18 DHCP NOTICE DHCP server started
1st day 00:00:18 SECURITY INFO PPTP Passthrough enabled
1st day 00:00:18 SECURITY INFO L2TP Passthrough enabled
1st day 00:00:18 SECURITY INFO IPSEC Passthrough enabled
1st day 00:00:19 SECURITY INFO FTP ALG enabled
1st day 00:00:19 SECURITY INFO TFTP ALG enabled
1st day 00:00:19 SECURITY INFO H323 ALG enabled
1st day 00:00:19 SECURITY INFO RTSP ALG enabled
1st day 00:00:27 3G/4G NOTICE handle_card start
1st day 00:00:27 3G/4G INFO LTE MODEM = 0, status = 1, targetVendorID = 0x0, targetProductID = 0x0
1st day 00:00:48 3G/4G INFO card_add 261 Get modem info error
1st day 00:00:48 3G/4G INFO LTE MODEM = 0, status = 0, targetVendorID = 0x0, targetProductID = 0x0
1st day 00:01:12 DHCP NOTICE DHCPS:Recv REQUEST from 00:1F:3C:B9:D2:CB
1st day 00:01:13 DHCP NOTICE DHCPS:Send ACK to 192.168.0.101
1st day 00:01:16 DHCP NOTICE DHCPS:Recv INFORM from 00:1F:3C:B9:D2:CB
1st day 00:01:45 DHCP NOTICE DHCPS:Recv REQUEST from 00:1F:3C:B9:D2:CB
1st day 00:01:45 DHCP NOTICE DHCPS:Send ACK to 192.168.0.101
1st day 00:01:49 DHCP NOTICE DHCPS:Recv INFORM from 00:1F:3C:B9:D2:CB
1st day 00:12:21 DHCP NOTICE DHCPS:Recv REQUEST from 00:1F:3C:B9:D2:CB
1st day 00:12:21 DHCP NOTICE DHCPS:Send ACK to 192.168.0.101
1st day 00:12:25 DHCP NOTICE DHCPS:Recv INFORM from 00:1F:3C:B9:D2:CB

@Mateusz