Yes, you can install Apple CarPlay retrofit kit on 70.00.100A. Please check if the checksums/hashes of your 70.00.335-*.up file match the ones mentioned here in this folder - use the checksum utility for this check. Perhaps you have to download .335 again, because it was not downloaded correctly (then the checksums/hashes do not match). You could have updated directly from FW 59 to FW 70.00.335. There is no need to update to each version in between.