don't be bumping as it's frowned upon, check out the rules when you get a chance it'll help you. also there's a dedicated thread for these types of switch issues where you'll get quicker help instead of making new threads...
if all the data didn't copy over then they are beyond repair, just cos the size looked alright doesn't mean it had finished the process which is why it was showing 99%
download firmware and extract to your sd card root, boot into emunand and run baybreak to update firmware. make sure you select fat32 + exfat option when asked.