The firmware for the Bolt WiFi module was developed in-house at Inventrom Pvt Ltd. The architecture of the Bolt platform is such that the user does not have to change the firmware of the device, for any functionality mentioned in the course (Or any other for that matter).
The OTA updates are available for bug fixes and feature updates (Similar to how your phone receives OS updates).
It can be triggered by finding the IP address of the Bolt WiFi module and running the following link in a web browser.
For example, if the IP address of the Bolt device in your wifi network is 192.168.5.3 then the link would be
This would trigger an OTA update query to the Bolt Cloud, with the current firmware version of the Bolt WiFi module.
If a new firmware for the device is available on the cloud, the device downloads the firmware, and enters bootloader mode and flashes the new firmware into its memory. This takes about 40 seconds. The device then restarts and connects to the wifi network that it was earlier connected to.
You can find out the current version of you Bolt device by running the following link in a web browser.
The latest firmware version available is 1.0.6 for Bolt hardware version 2.