discussed but not clear: How do you repair GDFS on db2010 with free tools?

I have a z530 db2010 cid49, after unlock with semctool 8.4, it says teh battery os empty, and doesnt accept the charger claiming it is charging an unknown battery.
Phone was fine before unlocking.
( I dont have backup )

SO, if I download GDFS file from DOwnload area, flash it with semctool, and then remake CRC, SCRC, etc... would these repair the GDFS or will kill the phone.

In the other hand, with the GDFS commands, used on db2020 for reading Sec Units, can I use the same script fo reading sec units off the db2010, flash other phone's working GDFS and restore teh sec units ? would this work or will kill ?

I have the phone on hand, waiting to be sure on what to do.