Just wait a few days and it will be back up. DMCA works like this:
1. Copyright owner sends a notice to hosting provider alleging infringement and asking for the content to be removed.
2. Hosting provider checks to make sure the notice has all the legally required items, and if so takes the content down and notifies the person who uploaded the content.
3. If the uploader feels the allegation is false, they send a notice back to the hosting provider stating this.
4. Hosting provider checks to make sure that notice also has all the legally required items. If it does, they hosting provider is required to put the content back up within a few days.
5. Hosting provider given the complainant the uploader's contact information. At that point the hosting provider is free of liability, even if the material is infringing. If the complainant wants it down, they have to sue the uploader directly.
In this case, we are somewhere in step 4. It seems very unlikely that CASIO will actually sue, so once step 4 is complete that should be the end of this.
You've probably seen many cases where DMCA did not work like this. What's generally happening there is that the hosting provider has implemented their own system for dealing with this things instead of following the DMCA procedure (hello, Google!). People tend to call any take down request a DMCA request regardless of whether or not the hosting provider actually uses the DMCA procedure.
