File size check on devkitProUpdater

[Izhido]

Is it possible to include file size information while checking for the different updates to the toolchain components? And, if it is, to use that info to check recently downloaded components before attempting to unzip them? That should help minimize problems with corrupted or zero-size downloads (a problem that recently hit me with the latest devkitARM/libnds/default ARM7 update).