Do not power off the router during this process, as it may brick the device. Key Benefits of Firmware Upgrades
You likely flashed a variant with a different Cxxx code. This is not fatal but may cause 4G bands to disappear. Flash back to your original region using TFTP. Huawei B612-233 Firmware
A typical stock version looks like: 10.0.3.1(H100SP2C233) or 11.0.2.13(H123SP4C233) . Do not power off the router during this