| Feature | Old Firmware (1.0.4) | New Firmware (1.2.8) | |---------------------------|--------------------------|----------------------------| | 5G SA mode | Broken (no connection) | Fixed | | Band locking | Only 4 bands | Full band mask (n1, n3, n5, n7, n8, n20, n28, n38, n41, n71, n77, n78, n79) | | Wi-Fi throughput | 300 Mbps max | 1.2 Gbps (with AX clients) | | IPv6 support | Partial | Full (DHCPv6-PD) | | Web UI speed | Slow (15 sec load) | Fast (2 sec load) | | VPN passthrough | PPTP only | IPSec + L2TP + WireGuard |
On certain Zl-cpe5g firmware builds, hidden engineering menus exist. Access them via: Zl-cpe5g Firmware
Go to Network > Cellular > APN Settings . Re-enter your carrier’s APN (e.g., internet for T-Mobile, fast.t-mobile.com for Metro). Then toggle airplane mode in the router GUI. | Feature | Old Firmware (1