Hi, **TL;DR** How can I create an updated offline toolchain for a nrf52811 based [[http://www.seeedstudio.com/wiki/BLE_Micro|BLE Micro]]? And is there any way to use the mbed online compiler to generate an OTA compatible .hex? **Long version** I have a couple of BLE Micros and I'm trying to develop an application for them. I was able to compile an update via OTA all demos from the [[https://github.com/Seeed-Studio/mbed_ble|suggested repository]]. Now I was trying to follow the [[https://docs.mbed.com/docs/ble-intros/en/v1.0/GettingStarted/URIBeacon/|URIBeacon tutorial]], but looks like there are some services missing in [[https://github.com/Seeed-Studio/mbed_ble/tree/master/BLE_API/services|BLE_API/services]] compared to the [[https://github.com/ARMmbed/ble/tree/master/ble/services|ARMmbed repository]]. So I guess it is simply not updated. So, trying to figure out how continue I found [[https://github.com/Seeed-Studio/mbed_ble/blob/master/Makefile|this Makefile]] that points to the Exporting-to-GCC-ARM-Embedded procedure. But the BLE Micro device is not eligible as a platform on mbed online compiler. My guess is that I should compile mbed SDK and mbed BLE API for nRF51822 with latests versions. But I don't know where to start yet, any guidance will be greatly appreciated. Thanks in advance.