To use the arduino IDE I need to install the driver and the instructions states that there should be two unknown devices but they show up as serial adapter and I can’t update the drivers.
Hi Bobbiy,
Have you turn it on first?
Before connect your RePhone to PC, you need to
- plug in the battery
- press and hold the power key for 2s to turn it on
Try this, right click on the “Serial USB-device” and click uninstall both the USB-device, then click “Scan for hardware change” under the “Action” pull-down list, after this you should be able to see two unknown devices as instructed in the wiki, then, you can do the following:
-
install the driver again as instructed in the wiki, if it does not work, go to step 2 below
-
Install the Driver manually.
In “Browse for driver software on your computer” window, click “Let me pick from a list of device drivers on my computer”, then click “Ports(COM&LPT)” and go “next”, click “Have Disk” afterwards, if you are using Windows Vista 64bit, locate "Arduino_IDE_for_RePhone-master\drivers\mtk\Vista\usb2ser_Vista64.inf", if you are using Windows 7 or higher with 64bit, locate “Arduino_IDE_for_RePhone-master\drivers\mtk\Win7\usb2ser_Win764.inf”
Thanks! I installed the driver manually and now it works great 
I tried this also but it still automatically make the two com port’s usb serial port’s. Almost 4 hours of fiddling with this problem. I am working on a windows 10 machine. Any tips?
Hi Jimmy,
you can still try to download the LinkIt Assist 2502 SDK 2.0.46
Then find the driver installer in the path MediaTek_LinkIt_Assist_2502_SDK_2_0_46\LINKIT_ASSIST_SDK\Driver\InstallMTKUSBCOMPortDriver.exe
Hello Chao,
This worked as a charm easy installation and i could update the firmware and arduino ide. All is working now.
Thx!