On October 30, 2025, Changan Automobile, in collaboration with Gasgoo Auto, hosted the Changan "Innovation-Driven, Digital & Intelligent Future" Industry Seminar in Chongqing. The seminar focused on areas including new energy, intelligent cockpit & autonomous driving, AI large model applications, electrification technologies (electric drive, ultra-fast charging, battery swapping), smart manufacturing, and lean production. It aims to jointly promote the innovative development of the automotive industry and help Chinese automotive brands move toward world-class standards. 

Core Technology: Our patented OTA Delta Update enables more efficient and cost-effective upgrades 

Carota was invited to showcase its vehicle-wide OTA and smart diagnostic solutions for attendees.  Carota’s patented delta technology has already been deployed in popular Changan models, including the UNI-T, UNI-V, and CS75 Plus, etc., serving as a critical component of Changan's software upgrade ecosystem. 

Source: Gasgoo Auto

Compared to traditional update methods, this technology utilizes an advanced differential algorithm to precisely identify changes between software versions. By generating and transmitting only a minimal differential package, it significantly reduces the data load. This not only accelerates the update process but also lowers bandwidth costs for automakers and reduces waiting time for end-users. 

• Substantial reduction in update package size – Maximizes savings on user data and server bandwidth costs.
• Markedly shortened upgrade duration – Achieves a "minute-level" experience, drastically cutting wait times.
• Markedly enhanced update success rate – Simplified workflow and stable transmission ensure superior reliability.

China National Patent for OTA Differential Algorithm (No.201610094508.4)  

Carota's patented OTA differential technology now delivers comprehensive coverage—from in-vehicle infotainment and navigation maps to core control units.   Whether optimizing the HMI, adding new features, or unlocking hidden performance, users can seamlessly access enhancements via convenient over-the-air updates.   This allows them to experience a smart terminal that continuously evolves to understand you better. 

Security is the lifeline of OTA. Carota's solution not only integrates end-to-end encryption and verification mechanisms to ensure the upgrade process from cloud to vehicle is foolproof; its differential patent technology itself also adheres to the strictest international security standards. This dual protection builds a solid and reliable technical barrier for Changan Automobile's digitalization journey. 

Source: Gasgoo Auto

The technology exhibition embodied the fruitful results of the Carota-Changan strategic partnership and the two parties' shared commitment to a "Digital & Intelligent Future." Carota remains dedicated to being a catalyst for change, deploying its innovative OTA and diagnostic solutions in collaboration with Changan and a broader ecosystem of partners to collectively propel the industry's intelligent transformation.