Download: https://www.alliwava.com/pages/pr550
Step1: Install allwiner_driver and allwiner_factorest to your computer.
Step2: Run allwiner_factorest.
Step3: Click icon 'Image' to select PR550 system file.
Step4: Click icon 'start'.
Step5: Connect the projector to your computer via a USB cable.
Step6: Start burning(Plug the power supply, press the power button once, and then press the "Volume +" button of the remote control continuously).
![1711353723915.png 1711353723915.png](https://forum.alliwava.com/data/attachments/0/88-9bb84090c5e6ed4202b9d37e9465bc28.jpg)
![1711353840906.png 1711353840906.png](https://forum.alliwava.com/data/attachments/0/89-c10b3459e0c35aec916820f79b6ad187.jpg)
![1711353921620.png 1711353921620.png](https://forum.alliwava.com/data/attachments/0/90-f646d9fa9b1aea389aaec07c2945592d.jpg)
![1711510181258.png 1711510181258.png](https://forum.alliwava.com/data/attachments/0/106-940dcd2714ce507de482b623a6ef891b.jpg)
![1711354087644.png 1711354087644.png](https://forum.alliwava.com/data/attachments/0/91-aaa483941b8e956e0bb8862c60c9b693.jpg)
Step1: Install allwiner_driver and allwiner_factorest to your computer.
Step2: Run allwiner_factorest.
Step3: Click icon 'Image' to select PR550 system file.
Step4: Click icon 'start'.
Step5: Connect the projector to your computer via a USB cable.
Step6: Start burning(Plug the power supply, press the power button once, and then press the "Volume +" button of the remote control continuously).
![1711353723915.png 1711353723915.png](https://forum.alliwava.com/data/attachments/0/88-9bb84090c5e6ed4202b9d37e9465bc28.jpg)
![1711353840906.png 1711353840906.png](https://forum.alliwava.com/data/attachments/0/89-c10b3459e0c35aec916820f79b6ad187.jpg)
![1711353921620.png 1711353921620.png](https://forum.alliwava.com/data/attachments/0/90-f646d9fa9b1aea389aaec07c2945592d.jpg)
![1711510181258.png 1711510181258.png](https://forum.alliwava.com/data/attachments/0/106-940dcd2714ce507de482b623a6ef891b.jpg)
![1711354087644.png 1711354087644.png](https://forum.alliwava.com/data/attachments/0/91-aaa483941b8e956e0bb8862c60c9b693.jpg)
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