Is there any way to write the unlock status to seccfg if the device only support preloader mode?

[lpxx50117]

For example like Redmi 14C which have the Helio G81 Ultra(MT6769J) SOC, it doesnt support brom mode, only preloader mode avaliable with modify DA and engineering preloader(?).
I can read and write any partitions I want even the seccfg, but it seems that 'mtk.py da' only support MTKClient's own DA file.
Here are the files for the Redmi 14C:

14c_preloader-DA.zip