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Meizu MX4PRO displays "Application download interface signature error", what should I do?
Restart the phone first. If it still doesn't work, it is recommended to refresh the current firmware or upgrade to the latest firmware system (it is recommended to clear the data). If the fault still exists, please go to the local maintenance point for inspection and maintenance. If there is no local repair point, you can also send it to the store for repair, or contact the customer service hotline: 400-788-3333. Online customer service will consider sending it back for repair.

Meizu Technology, founded in March 2003, is a well-known smartphone manufacturer in China, headquartered in Zhuhai City, Guangdong Province, China.

The company mainly produces MP3 walkman and mobile phone. At present, it has three series of mobile phone products, namely "Meizu PRO" high-end brand, "Meizu MX" mid-range model and "Charm Blue" sub-brand, and also has Flyme system. [1] The company has nearly 2,500 specialty stores all over the country, and its products are sold to Chinese mainland, Hongkong, Russian, French, Ukrainian, Israeli and other countries and regions.

20 14 10, announcing the strategic cooperation with Alibaba. 2065438+In February 2005, it was invested by Ali for 590 million dollars. On May 2017 10, Meizu was shortlisted in "CCTV China Brand List".