Originally Posted by AdamOutler
Heimdall won't handle large files. I've not yet even tried that. You can't flash system images. Read the directions about "large files"
I saw it now, "don't flash large files, Heimdall has a buffer problem with them". Sorry to hear that, what that basically means is that Heimdall (and JOdin) cannot be used to restore stock firmware, which often comes with a large system image – particularly newer phone models, which have larger hardware and carry more stock files.
I hope this can be fixed in the future. I'm glad it can flash small images, like a recovery partition. But flashing stock images is also very useful, and it would be great if Heimdall could do both.
In the meantime, I've dug up the HDD I have Windows installed on and slapped a copy of Odin on there, so I'm good for now.