Here are a few options for a post regarding "PS4 9.00 Firmware," depending on where you are posting (a tech blog, a forum, or social media).
Is your PlayStation 4 asking for an update? The new 9.00 firmware is now available for download. ps4 900 firmware download install
FAT32 has a single file size limit of 4GB. Since 1.1GB is well under 4GB, you are safe. If Sony ever releases firmware over 4GB, you will need exFAT. Here are a few options for a post regarding "PS4 9