EC25-AF(D) - How to flash the sdk build image

I have built the QuecOpen SDK with my application. Following the details:

ns@ns-VirtualBox:~/quectel/ql-ol-sdk$ ls -l | grep -v “zip|gz”
total 54764
-rwxr-xr-x 1 ns ns 5438 Aug 14 2020 Makefile
drwxr-xr-x 13 ns ns 4096 Aug 14 2020 ql-ol-bootloader
drwxr-xr-x 4 ns ns 4096 Mar 10 10:30 ql-ol-crosstool
drwxr-xr-x 6 ns ns 4096 Aug 14 2020 ql-ol-extsdk
drwxr-xr-x 3 ns ns 4096 Jan 5 2018 ql-ol-kernel
drwxr-xr-x 24 ns ns 4096 Aug 14 2020 ql-ol-rootfs
drwxr-xr-x 2 ns ns 4096 Aug 14 2020 ql-ol-usrdata
drwxr-xr-x 3 ns ns 4096 Aug 14 2020 ql-ol-usrfs
drwxr-xr-x 2 ns ns 4096 Mar 29 08:41 target
VirtualBox:~/quectel/ql-ol-sdk$ ls -l target/
total 112380
-rw-r–r-- 1 ns ns 41377792 Mar 29 08:41 machine-image-mdm9607.squashfs
-rw-r–r-- 1 ns ns 5382400 Mar 29 08:40 mdm9607-boot.img
-rw-r–r-- 1 ns ns 61079552 Mar 29 08:40 mdm9607-sysfs.ubi
-rw-r–r-- 1 ns ns 3932160 Mar 29 08:40 usrdata.ubi
-rw-r–r-- 1 ns ns 3301376 Mar 29 08:40 usrdata.ubifs
VirtualBox:~/quectel/ql-ol-sdk$

Question:
How do I flash these to the module?

In the doc of quick start guide, we recommend you to flash the image via fastboot.