Aspire’s NX75 new firmware V05 ensure users can experience the new menu mode and the Key combination mode.
Pressing the fire button while installing the battery will bring up the firmware version along with the Aspire logo.You may then select your language preference,English or Chinese.Then you can select the operation,Key or Menu.
Window: 
Mac:
4. Click “OpenFile”, choosing the firmware (NX75_V03.bin) to be upgraded
5. Click “Update”
6. Please click “ok” after firmware update is completed.
7. Firmware Version of the device will present after updating. Click 
and
disconnect the USB cable to complete the whole process of firmware update.
4. Click “OpenFile”, choosing the firmware (NX75_V03.bin) to be upgrade.
5. Click “Update”
6. Please click “ok” after firmware update is completed.
7. Firmware Version of the device will present after updating. Click and
disconnect the USB cable to complete the whole process of firmware update.
There is a silver coated sticker on the product package which states “scratch and check”,just scratch off the silver coating and you will see a security code. Check the security code on the Aspire website: http://www.aspirecig.com to verify the authenticity of your product(s). If you are the first to check the security code on the Aspire website, your product should be original, if your security code has been checked previously or does not exist, you may have purchased a fake product, please contact your dealer for a refund/replacement.
Letter “B” means bypass, which means that the mod is under bypass mode, the voltage and wattage cannot adjusted, the mod will automatically adjust the output wattage or voltage according to different resistances of the coil attached.
If you want to change the wattage, you need go to the wattage mode, press W button to switch mode between VW, VV and Bypass modes.
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