Huawei official website has the latest firmware, Huawei Ascend C88 12 firmware (C88 12, Android 4.0, V 100 192B937, China Telecom). Mandatory official version. Strong brush method: forced upgrade (strong brush) method: 1. Prepare an SD card with a capacity of more than 256M m, and recommend Sandisk, Kingstone or Kingmax. Two: format SD card (optional). Third, download the official firmware package from the computer. (Please go to Huawei official website to download the firmware package corresponding to c88 12, that is, Huawei Ascend C88 12 firmware (C88 12, Android 4.0, V 1000 192B937, China Telecom) and choose to decompress it to the current one. Fourth, confirm that the update.app file exists in the dload directory, and then copy the entire dload to the root directory of the SD card. Five: When the mobile phone is turned off, insert the SD card and press the volume increase key+volume decrease key+on/off key at the same time, and the mobile phone will automatically enter the upgrade mode and then start the upgrade. When the progress bar is full, the phone will automatically restart. If not, please remove the battery manually.