Based on a large amount of LOT industry experience and technology accumulation, including IoT whole vehicle upgrade, MCU and other master control processor work communication module, bus architecture, differential technology, etc., Open FOTA is ABUP's OTA
在OpenFOTA方案之前，模组只支持升级模组的应用 APP（FOTA），使用OpenFOTA之后的模组，则可以升级MCU 的应用 APP（FOTA），站在整机终端的角度可以分别称之为整机固件升级（FOTA）与整机应用升级（SOTA），所以OpenFOTA方案相当于同时赋能了鸭脖网站入口整机设备的FOTA升级能力与SOTA升级能力。
既可以升级ST MCU 的应用 APP(整机SOTA)，又可以升级广和通模组的固件APP（整机FOTA）
广和通模组侧集成了鸭脖最先进的差分升级算法，比MCU上的算法相对更高效，做出的差分包更小。
OpenFOTA自带的断电续升，安全鉴权等机制，更多维度，更省资源的情况下，保障了升级的可靠性和可用性，更是支持不消耗MCU资源的回滚升级。
鸭脖携手广和通从模组出厂便预留差分存储区域，用户可自定义该区域的使用，相当于增加了一个外挂Flash的资源供使用。
OpenFOTA在广和通模组内构建了完整的端、云交互业务场景，也同时支持近场本地升级刷写。
The device side of the Open FOTA solution is composed as shown in the figure above, with the main control processor ST MCU burning the ABUP ELB firmware, which is graphically configured and generated and contains the UP program for O1 A service interaction with the module as well as the lightweight bootloader of the ST MCU and the associated protection mechanism, while the module is already pre-integrated with ABUP's UA differential algorithm, UP program, interaction logic interface, etc. have been pre-integrated in the Fibocom module.
The end customer only needs to burn in the ELB firmware for the selected ST MCU and then pair it with the corresponding FIBOCOM module. There is almost no need to worry about how to implement FOTA, just verify and use it.
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