The module is shipped with the EZ-Serial FW here: https://www.cypress.com/documentation/software-and-drivers/ez-serial-ez-ble-module-firmware-platform
You can also find the user guide for the FW on the above website.
Further information, the module advertises as MTK DUT 706, it has one characteristic when you write to it, it responds Hello Client.
We ordered two dev kits that showed the same behavior. we were able to upload ez-serial to the dev kits by following the instructions in the last post on this thread CYBT343026-EVAL EZ-serial
QR code from module B34302601021832116IC
QR code from dev kit B3430260102175210485
How do you read the date code from these serial numbers.
According to mouser website the firmware is pre-loaded from the 8th October 2018
The module is shipped out before the EZ-Serial FW is officially released. You need to program it with the EZ-Serial FW by yourself.