1. How to download the old version of b6 12 from Apple's mobile phone and download it from a third-party mobile assistant? You can use the PP assistant to download and install the old version of the APP.

1. Download mobile phone PP assistant

2. After downloading and installing the device, connect the device.

3. Click Install Mobile Phone in the main interface.

4. Install the old version of B6 12 on the mobile phone PP assistant.

2. How does 2.OPPOr9s download B6 12 old OPPO mobile phone firmware installation package? Download address:

You can upgrade in OPPO official website-Service-Mobile Phone, find the corresponding model of your mobile phone and click Enter to download.

Note: Check the update in Mobile Phone Settings-About Mobile Phone-System Update to find out whether your current version is the latest version.

OPPO R9s is a smart phone released by oppo on 2016100619, which focuses on taking photos and locating young users. 20 16, one of the most important products of Guangdong opal company, officially went on sale on 20 16128.

The configuration upgrade of OPPO R9s mainly focuses on the processor and camera. It still uses a 5.5-inch 1080p screen (ultra-narrow black edge design, covered with gorilla 5th generation glass) and a memory combination of 4GB RAM+64GB storage. The processor is a Qualcomm Snapdragon 625 based on 14 nanometer technology (the main frequency is 2GHz) with a built-in 30 10mAh battery. Support VOOC flash charging, run ColorOS 3.0 based on Android 6.0, the camera is dual16 million pixels, and the rear is IMX398 sensor customized by Sony and OPPO.