Huawei Hg8145v5: Firmware
A: Never. The flash layout and drivers are different. This will hard-brick your unit.
A: Huawei releases security patches every 6–12 months for R019 series. R020 series is newer but less stable for the v5 hardware. Firmware Huawei Hg8145v5
Modern firmware versions for this model (such as V5R019 or V5R022) bring several quality-of-life improvements: A: Never
: The firmware manages Layer 3 functions including NAT/NAPT, port forwarding, and dual-stack Firmware Management and Updates Firmware Huawei Hg8145v5
V500R019C20SPC135 or V500R020C00SPC100 (if available for your hardware revision).