First, yeah its the same device pretty sure, now so you can gain a little confidence in it, theres a little trick to enter into RECOVER mode which is used to flash whatever you want into the device..
Pay attention... Go get a paperclip or a toothpick(this is better) and without powering the device insert it in the AV hole thats on the back, and try to find at the end a button, its pretty small but it there, press it and hold it, then without releasing power the device and you will enter into recovery mode.
How easy is to flash? just use the second option and give it a ZIP file with the new flash and thats it the unit will flash in a couple of minutes, its fool proof and you wont brick your device.
Now about my script how is it working if this is doing it after, theres a good explaination, but im pretty sure i will confuse you to hell, you have to have a little faith in me, flash the firmware i told you, then use the unmodified script, reboot, configure, reboot and be happy
AFTER you are set and having a device fully working i will explain how its working but not before you see it working..