By using the DFU to transfer an updated version of the application, The nRF Connect tool pop-up tip:"upgrade succesfully". But the version of application mostly is still older.
Sometime it's OK.
Mobile phone models: Meizu M3s, Meizu note2
The android 5.1 system
nRF Connect tool: Version 4.12 and above
I had tried to change the value: nRF Connect tool->settings->dfu options->number of packets: from 10 to 1. It doesn't work.
Everytime it will upgrade succesfully by using the samsung,huawei, or google mobile phone.
What could I do that can match all kind of android mobile phone?
---
According to the reply, add the following content:
The device is nrf52x
The SDK is nRF5_SDK_11.0.0_89a8197
The DFU(library version1.6.1) in NRF Toolbox has the same problem.
There is no problem during the upgrade process. I had checked the log.txt.
Thank you.