Downgrading IP Phones (SPA504G)

Hi,
I have an issue with the LDAP directory search functionnality on my phone.
From what i have read, it is due to my firmware (7.5.4).
I would like to downgrade it to 7.5.2.
My question is : Is downgrading the same process as upgrading the firmware on the phone? And is it safe?
Thank you.

Are you speaking about 7.5.2b, isn't it ?
Is downgrading the same process as upgrading the firmware on the phone?
Yes
is it safe?
I don't know, but I did it several times.
Mark thread as answered if it answers your question.

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