Hey hey hey, I've got a pair of Zero Z902s that I recently got. The stock firmware is just a mess. I've been able to get ADB shell working, and the stock ROM has a su binary in it, but it isn't possible to remount /system as read-write, so nothing meaningful can be done to make the "factory" firmware less terrible.
I'm familiar with boot.img, and should be able to pull one from the "stock" firmware via adb, then unpack it. I've done some ramdisk mods in the past, and am working on a Samsung tablet ROM, so I've got a good set of skills for this type of job
The Z902 is very tricky, I have only ever been able to flash anything on mine using PhoenixCard and a "stock" M802 firmware.
Any tips on flashing CWM for the z902? Will the M802 build of CWM work?
Since I have two of them and they're so cheap, I'm not super worried about messing one up.