WARNING - See the second post for reported problems
This ROMs are for the North American aka US devices (YP-GI1CB), if you have an international device (YP-GI1CW), you should go to this thread which was created by our good friend zebluk. Also there is a wonderful tutorial how to flash the rooted image in that thread, so you can follow it (but use the image from this thread). All credits to zebluk!
When downloading from the mirrors, be warned, I have not checked them, you should check their integrity by calculating their sha1 hashes and comparing with ones I am providing for each file.
Here is the PIT file.
Here is the STOCK FACTORYFS ROM (size: ~260 MiB, sha1: 709ea3a1594fe4776065308a198e120129652b38)
Here is the STOCK KERNEL (size ~5.2 MiB): sha1: 25235a0ed6ad42cab1743b8f1c141248efb25647)
And here is the ROOTED STOCK ROM (size: ~260 MiB, sha1: 64ec57e6254b3c24ad7740b0c2bcad3a6e4bd26c)
Password for all the 7zip archives: XDA-DEV
First you should un-7zip your downloaded file, there you will have directoriy with a descriptive name and a tarball archive inside.
You can flash these tarball (without extracting) using Odin v3.04 (Attached) or extract the image file from the tarball archive and flash using Heimdall v1.3.1 (don't use the 1.3.2 version). I've personally tried flashing only with Heimdall under Linux, but Odin should work too.
If you are using Windows and you don't have device drivers, download them from here.
@Good Guy User:
DepositFiles is not the best filesharing service but works well for me, feel free to create mirrors and share links in PM, I'll post them here.