Stealth mode doesn't appear to be the problem with your SMOK screen, you can update the firmware for most advanced SMOK mods by plugging the mod into your PC and selecting the right upgrade tool from this list on SMOK's website. Contact SMOK - If you are unsure how to update firmware...
the device won’t fire anymore – or reset the puff counter. In the Settings sub-menu, you can set the screen timeout, set the time and date, and reset the SMOK G-Priv to factory settings. This section also displays the UUID, and the firmware version. ...