Any other requirement for HEX on DFU in Android OS?

[jimlin]

Hi guys, I install V1.6 nRF ToolBox apk in my Android phone, and want to do the DFU operation. When the device in DFU status, I select the target HEX file but it shows me INVALID file so that the Android phone could not connect to the device. I found the 'ble_app_hrs.v7_1_0.hex' in the SDK folder should be OK with 'Init file selected' displayed. So, is there any other file needed exclude app hex? Or other setting ? The SD version is 7.0 and SDK is 6.0.

Thanks a lot.

[Hung Bui]

@Jimlin: please make sure you select Application instead of Distribution packet (ZIP) when you click Select File. Also after you select the file, please select NO when asked for Init packet.

The bootloader from SDK v6.0 doesn't require init packet.

If the issue remain, please upload your application hex file (by editting the answer)