Updating problem please help

I have a powerpoint bundle approved and tried to add an update, the zip file becomes 42.4MB when the update is added to the file, and there it gets an error at 98% when uploaded… but without the update it’s only 35MB and it uploads successfully… Is this because of an upload capacity limit?

Can I upload only the update to the file as V2.0 alone? so it will automatically get added to the final deliverable as Update v2.0?

It seems uploading the entire file won’t work at all