Can't create FTF from PC Companion files with Flashtool

Hi
I've downloaded and copied the update firmware files for my D2302, however when I try to create the FTF file it freezes while processing the first file. The decrypted file it creates has no data in it. Any ideas?
Alternatively, does anyone have this customisation version in ftf form?

My end goal is to be able to have it rooted and if I'm really lucky, have a recovery. However, it doesn't look like [D230X.properties, in Flashtool data] it even has a recovery (which sounds odd, but I can't get it to go into recovery by power+voldn - it just goes through to system.)

Thanks

Updating with PC companion while rooted

Hi, all.
Today I installed the PC companion on my computer, and I proceeded through the requisite steps to update to 5.0.2. It's currently in the updating process, but I just realized that I forgot to unroot it (I used KingRoot to root stock kitkat to avoid unlocking the bootloader) and I've heard that root can interfere with OTA's, causing them to fail. Has anybody here tried updating a rooted device "as is" (that is, without taking the time to unroot before OTA), and have you guys encountered any issues doing so, either in the process of updating or after the update has been completed? Just want to know if there are any consequences to what may be a mistake.