What if wechat can't be upgraded and installed? Why can't wechat upgrade and install? If Samsung mobile phone has a new firmware, there will be a push update notice. Firmware upgrade can optimize some functions of the machine, improve the mobile phone system, and make the mobile phone system more stable and smooth. It is recommended to try the following methods.
1、 Open Settings - about device - System Update - update. Download and install firmware updates through the online firmware upgrade (FOTA) service. Note: FOTA software upgrade requirements: 1, stable Wi-Fi or 3G network. 2. The battery power is more than 50%. 3. The available mobile phone memory is more than 1GB.
2、 Use Samsung KIEs / kies3 (if the current version is 4.3 system, you need to download kies3, KIEs software download: you can login Samsung official website - click the upper right corner magnifying glass search bar - Enter key words of KIEs - click the magnifying icon again to search and download to KIEs software, download and install it into the computer) recently launched new models by downloading smart Switch software connects the computer to update the firmware (smart switch download method: go to Samsung official website - click the application tab - click Samsung smart switch - select Windows version download / Mac OS version download in the middle of the page according to the computer's operating system)
3、 If the above two methods can not upgrade normally, it is recommended to bring the Three Guarantees certificate and send the mobile phone to the local Samsung Service Center for security upgrade.