User's Guide

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LM074 SPP with GAP Central Application v1.1

Figure 5: UART messages showing a failure in image verification

5.3.5 Successful firmware Upgrade:

i. The image below depicts the messages shown by the module

during a successful firmware upgrade procedure

ii. After showing message “V_Pass_2” or “V_Pass_3”, the module

performs warm reset and starts executing the new image.

iii. In the image below, the message “Entering Message Loop”

indicates that the device has performed warm reboot. The

message “GATT Initialised” indicates that the new image has

GATT is enabled for BLE connectivity.