I think you can try this way:
[downloading necessary files]:
1. pls refer to How to root stock 3.2 and download root-3.2.1-V4.7z
1. extract files from root-3.2.1-V4.7z to c:\a500unbrick
2. go to folder c:\a500unbrick and fined .pdf file with instractions. Read it carefully and follow it.
at the end of this process you will have os 3.2.1 with custom recovery.
Could someone please help me with this?? Im stuck with the green Acer screen. Bootloader is hosed, I can get it to APX mode, no adb, no recovery, no fastboot.....I think I can use NVflash to flash a recovery and then flash an update.exe, I just dont know the commands. When I try nvflash --sync, the nvidia APX driver in device manager just dissapears and I have to put the tablet back in APX mode.