~~NOTOC~~
[[device_api]] > [[BS2_UpgradeFirmware]]

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===== BS2_UpgradeFirmware =====
Upgrades the firmware.
==== Declaration ====
<code cpp>
#include "BS_API.h"

int BS2_UpgradeFirmware(void* context, uint32_t deviceId, uint8_t* firmwareData, uint32_t firmwareDataLen, uint8_t keepVerifyingSlaveDevice, OnProgressChanged ptrProgressChanged);
</code>
==== Parameter ====
  * [In] ''//context//'' : Context
  * [In] ''//deviceId//'' : Device ID
  * [In] ''//firmwareData//'' : Firmware data
  * [In] ''//firmwareDataLen//'' : Size of the firmware data
  * [In] ''//keepVerifyingSlaveDevice//'' : Flag that decides whether to enable the authentication on the slave device when upgrading the resource
  * [In] ''//ptrProgressChanged//'' : progress change listener
<WRAP indent>
<WRAP info 70%>
**NOTE**\\
keepVerifyingSlaveDevice parameter needs to be checked whether it is supported from the firmware.
</WRAP>
</WRAP>
==== Return Value ====
If successfully done, ''BS_SDK_SUCCESS'' will be returned. \\
If there is an error, the corresponding error code will be returned.