Runtime change service and characteristic

[wawulong]

Like the title, Is it possible to disconnect ble link or stop advertising at runtime, then change the service uuid and characteristics?

I wanna to do OTA service in application code because there is more complicate control on the same time, like pwm control to show the updating process, so I think it is no need to add pwm module to both application and bootloader.

Beside the pwm module - it will causes the bootloader size overflow.

[wawulong]

Last I still use the official version, separate the application and bootloader code.

Thanks.

[y]

I also use nordic DFU to do OTA service with android phone,but I found that some device can't update device's version some time? You met this kind of problem?