I checked dfu_g095ca_v1.66.15.apk\res\raw\ from http://www.chinawatchs.com/no-1-f5-how-to-manually-update-the-firmware/ part And this one is the latest NO.1 F7 firmware. and many zip and hex files there use S110 soft device so it is nrf51, the only nrf52 firmware seems to be inside dfu_g095ca_v1.66.15.apk\res\raw\hplus_wechat_fw.zip and inside is something named PCA10040 which is the SDK kit (and that one is SDK11, unsigned).
@fanoush started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I checked dfu_g095ca_v1.66.15.apk\res\raw\ from http://www.chinawatchs.com/no-1-f5-how-to-manually-update-the-firmware/ part And this one is the latest NO.1 F7 firmware.
and many zip and hex files there use S110 soft device so it is nrf51, the only nrf52 firmware seems to be inside dfu_g095ca_v1.66.15.apk\res\raw\hplus_wechat_fw.zip and inside is something named PCA10040 which is the SDK kit (and that one is SDK11, unsigned).