Hi,
Thanks for your feedback.
For the *.tgz files, you need to decompress them and you will find several folders which relate to the different NXP reference boards. Once you find the NXP reference board you have (or your board is based on) and you will find an *.sdcard file which is the file you need to use:

As for the SJA1110, we understand that it is not. The FW for SJA1110 is available under the GoldVIP package. Under the NXP reference boards, the SJA1110 is preloaded with a binary, which does not require any additional loading unless the configuration on the SJA1110 needs to be changed.
Please, let us know.