my plan to root the ally:
1 get into fastboot (done)
2 download kernel and a custom recovery initrd into RAM (not flash)
3 backup mtds to sdcard (they're root access only in stock firmware)
4 modify and reflash using fastboot
recovery images exist for other android phones to do the mtd backup (Nandroid, etc)
but we still need the zImage off the Ally. (config.gz is available through /proc but the android msm tree doesn't know about the Ally hardware)
I've contacted LG for the source, and was told they don't have a public tree for it but they can send it to me "the other way" still waiting on this.
meanwhile, i used an http monitor to watch the updater app and get the location of the firmware off LG's website hoping to extract the zImage from that, but it's in an encrypted file (wdb format but existing extract tools fail.)
Edit1: here's the link to get the firmware file (replace X's with your meid) it returns a link to the file, without authorizing first the link doesn't work.
http://csmg.lgmobile.com:9002/csmg/...=A00000XXXXXXXX&model=191&country=US®ion=N
this gave me VS740ZV6_01 the model num might have to be different if that's not the version you have, check phone info