Question [Q] Downgrade Android Baseband

Hello to all the great community,
Generally: I want to install miui v5 on my mobile (LG P700 or L7) but i have previously installed (2 months ago) the kitkat 4.4.2 version with the v20f baseband.
The problem: The problem is that in order to install miui v5, i must have baseband v10k on my mobile..
The question is: Can i flash the older, v10k, baseband on my mobile via, only, the cwm, as described here: ??

I forgot to mention that i've already installed miui v5 ported on my phone!

Thank you,