If CN900 screen became black and white . Please check follow ways how to fix it:
- Step 1: First connect CN900 with computer and power by USB wire
Step 2: First go to CN900 official website: http://www.cn900.net and download : CN900_LOADER V3.10
Step 3: Click
- Then will appear follow picture:
You will see in front of Fast there marked hook - Step4: Remove the Hook in front of Fast.
- Step 5: After remove the Hook in front of Fast then press Update button. After then CN900 and update with computer together.
- Step 6: After CN900 finished update with computer then will recover as follow:
- Remark 1:If update one time the CN900 still not recover then try as above ways again and again till it recover.
Remark 2:If during update CN900 and appear a window which need you choose COM port. Then you need to choose a correct COM port. If you do not know which is correct COM port then operate as follow steps:
First right click my computer
- and choose property
- And then choose Hardware.
- And then choose device manager
- And then find port (COM and LPT) and click + then will see follow ports
- And then take CN900 USB wire out from computer then check the port (COM 和LPT)again:
- Checking the difference between connect with CN900 USB wire with computer and take out CN900 USB wire from Computer:
- Then you will see when connect with CN900 USB wire with computer then will see
- After take out CN900 USB wire from computer then
- disappear.
- So you need to choose
- Notice:When choose COM port not must be
- . Different computer have different case. It depend on that when you connect CN900 USB wire with computer and take out USB wire from computer which port ( COM) appear and disappear therefore that port (COM ) you need to choose