Subject: Renesas RL78/F13 Microcontroller (Package B628-265) Document Class: Hardware Interface & Firmware Implementation Guide Date: October 2023
This is the most critical aspect users miss. A Huawei B628-265 bought from Carrier A is not running the same software as one bought from Carrier B. b628-265 firmware
Neglecting firmware updates is risky. Common issues seen on old builds (pre-2021) include: If your B628-265 came from a specific ISP (e
The firmware relies heavily on the Renesas Smart Configurator to generate drivers for: b628-265 firmware
If your B628-265 came from a specific ISP (e.g., Vodafone, T-Mobile, Telia), check their support portal. Carriers often customize firmware with their own splash pages and APN settings.
| From Version | Upgrade Method | Downgrade Support | |-------------------------------|----------------------------------|--------------------------------| | b628-260 or newer | Web, TFTP, or USB | Yes – to b628-251 or later | | b628-251 through b628-259 | TFTP or USB only (no web) | Yes – to b628-250 | | b628-250 or older | Two-step upgrade: first to b628-251, then to b628-265 | No – older bootloader change |
Important: If you are on firmware earlier than b628-251, you must first upgrade to the intermediate version b628-251 (available on the support portal) due to a flash partition layout change introduced in February 2024.