That would be the "Philips" remote. However, you have done what was once warned about in a famous thread many years ago labeled "Don't be a moron." I can't find it now, but Richard Bullwinkle (aka Tivolutionary) cautioned against putting a disk from one model TiVo in another, such as you did. While it may seem to work, what happens is that the box will call into TiVo and repeatedly try to download the "correct" software version, and it will fail. TiVo doesn't like this.
With some of the TiVo-branded Series 2 models you can do this, but not in this case.