Supports LTE download speeds up to 150 Mbps and upload speeds up to 50 Mbps .
Region mismatch or APN lost. Fix: Manually enter APN. If still no signal, downgrade to previous verified firmware that worked. huawei b311221 firmware verified
: This version includes fixes for software vulnerabilities and improvements to firewall, NAT, and DHCP services. Updating and Verifying Firmware Supports LTE download speeds up to 150 Mbps
Unverified firmware sometimes includes tools that accidentally wipe or corrupt the IMEI number. An invalid IMEI blocks network registration permanently. huawei b311221 firmware verified
Even if you download a file labeled "verified," you must confirm it yourself. Here's how: