I have seen several software packages that offer optional automatic UV unpacking.
My question is, why would you ever unpack UV manually if there is an automated tool for doing so? Are there any significant disadvantages to using an auto-generated UV card?
So I extracted the file boot.img with unpackbootimg in Ubuntu. Then, without changing the file, I have repackaged it. But the file size became smaller. From 36.7 MB to 17 MB. I tried to transfer this image to my phone. But it failed. Also the ramdisk file was empty after unpacking the boot.img.