This is not my work... just bringing it to AF from XDA -------- For users who mistakenly upgraded to .26 or received .26 from the beginning. This method - guide works: . . a) downgrad from .26 firmware to .17 by doing the following: ONE CLICK Downgrade, using Wolf's method and root tool (thanks to viperboy) http://forum.xda-developers.com/show...4&postcount=52 Just put the BLOB file of FW (aprox 750mb+ file with no extension, extract it from the zip) http://dl.dropbox.com/u/53726414/US_...teLauncher.zip (Asus pulled the files off the web site so I got the BLOB file from http://forum.xda-developers.com/show....php?t=1642614) Then put the BLOB file on the root of your tf300 internal memory (I also placed it a copy of it in the root root of SD card - just in case), then make sure that usb debugging is enabled, also make sure you have the asus drivers installed in your windows machine: I got the drivers by installing: ASUS Pad PC Suite (PC version V1.0.41) from http://support.asus.com/Download.asp...300T&p=20&s=16 Then you can run option 1 on the modded vipermods tool (via windows machine) : viperMOD Primer Tool v4.5 - Modded by bpear_v3.exe exe from : Download: https://docs.google.com/uc?id=0B8gHy...xport=download viperMOD Primer Tool v4.5 - Modded by bpear_v3.zip Dev-Host - The Ultimate Free File Hosting / File Sharing Service b) Then apply ROOT to .17 FW with SparkyRoot It is a one click root app: SparkyRoot.apk - (1.09 MB, 9403 views) from http://forum.xda-developers.com/show....php?t=1526487 c) Once root is done, get Voodoo root keeper app from android/play market and save full root. https://play.google.com/store/search?q=ota rootkeeper d) Update the firmware to .26 via OTA/wifi works perfectly. Then restore root with Voodoo root keeper app, and install your apps: Droidwall, Titanium Backup, Rom Manager etc.. Thanks for all the help from other devs and tips from users Originally Posted By anduzer -------- VERY IMPORTANT, ACTUALLY MOST IMPORTANT THING TO DO: As soon as you're rooted, get Voodoo OTA rootkeeper. its free from the marketplace. then open that app up and Save and backup your root. REPEAT, SAVE & BACKUP YOUR ROOT. you will kick yourself in da a$$ if you don't..lol. then now you can update to the latest firmware for 300, which is .26 or whatever. Once you update, you will initially lose root. but no worries. you just open up the voodoo app and restore your root. Now you are rooted again on latest firmware. you will use this method from now one to restore root after a firmware update. there has already been confirmation of a 300 owner rooting on.17, then using voodoo to save/backup his root, then update to .26. then using voodoo to restore root. now he is rooted on latest .26 firmware for 300. Originally Posted By demandarin .