Yes. Navigate to Settings > Network > IPv6 to enable it. Your carrier must support IPv6. The SP9 build includes improved IPv6 DHCP-PD (Prefix Delegation) stability.
Yes, the "C00" universal channel removes SIM locks. However, if your router has a hardware-level network lock (rare for B312926), you might need a separate unlock code. In practice, 99% of users find the SIM fully unlocked after this flash. huawei b312926 firmware 10031h192sp9c00 universal updated
No firmware is perfect. Here are reported quirks with this version: The SP9 build includes improved IPv6 DHCP-PD (Prefix
| Issue | Workaround |
|-------|-------------|
| SMS storage shows as full | Clear inbox via web UI or use an SMS-forwarding script. |
| Wi-Fi 2.4 GHz drops after 24 hours | Disable “Wi-Fi Smart Savings” in advanced Wi-Fi settings. |
| Cannot access band selection menu | Use a tool like HuaweiBandToolV1.5 or modify the HTML via browser inspector. |
| Router reboots when inserting SIM | This is normal for the first boot after firmware change. Reboot manually a second time. | In practice, 99% of users find the SIM