A computer system includes one or more processors and machine readable storage media coupled to the one or more processors having instructions stored therein that cause the computer system to: receive a payment request packet from an Internet of Things (IoT) device; extract a signature of the payment request packet that includes metadata; identify a firmware update status from the metadata of the signature; determine that the IoT device has a first version of the firmware installed on the IoT device based on the firmware update status; cause a second version of the firmware to be installed on the IoT device in response to determining the IoT device has the first version of the firmware; and initiate a transaction based on the payment request packet responsive to the second version of the firmware being installed on the IoT device.