I need help on update my Mame 0.211 Rom/CHD

Where can i get all the previous update from 0.212 to 0.220? I really don't feel like downloading the entire romset again especially consider how large the CHDs are, and my old version are pretty close to my destination version.

https://bda.retroroms.info:82/downloads/mame/update-packs/

 Does this including CHDs?

You can download the CHDs you're missing from https://bda.retroroms.info:82/downloads/mame/CHDs_temp/ and https://bda.retroroms.info:82/downloads/mame/CHDs/

Hi, there is something i don't quite understand, please correct me. Doesn't CHD follow the same rule of roms?Which require a dat file? Wouldn't even the same file but have different version? Or does the only thing i should consider is whether or not i have(or missing) the CHD file, and not consider same file with different version. I'm lost, sorry for the noob question, because i really am.

hmm doesn't understand your q. Why does roms need a dat? A dat file is only used with a rommanger to verify the rom, it contains nothing for the emulator itself. and the same for a chd-file, it doesn't need a dat file.

A game can require roms and chd for emulating the game. As chd-files normal not change every version. We have stored them in a separate folder, in the chd-temp folder are still chds that are not verified and replacked with size of 100MB each part .....