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admin said Copying the update.img to internal storage or sdcard does the job with manufacturer's updates, but it doesn't work well (or at all) on a custom firmware. This is caused by the partitionning of the different images (system, data, kernel...) which is different between stock and custom firmwares. May I ask how you edited the .img-file? What tools did you use? Maybe if you let me know how you did or what tools you used I can test root the same android-version but with a different boot version, this one you helped breum with is 1.xx and mine is 2.30 and every time when I try upgrade I end up with fail. Or if sumone else here can help me root the tac-7018 denver with boot version 2.30. This version are the one I need rooted: http://www.denver-electronics.com/denver-tac-7018-firmware-upgrade/ But if no one have the time to root this version, info on the tools and how-to doesnt take that long to explain, so I can do it myself and post it here for does who need to root this version.
I have the same problem: restoring the rooted image (latest) from this thread with RKBatchTool (from Denver original package) results in deverending boot process and after trying it with RKDEviceManage, the boot process stopped right at the beginning where penguin is in the upper left corner. Tablet works fine after restoring it with original firmware.
So I need the original firmware rooted with BOOT version 2.30, could anyone please root the latest original firmware (http://www.denver-electronics.com/denver-tac-7018-firmware-upgrade/) but with BOOT ver 2.30?
Thank you in advance!
hello! 2 years later
i cant get it to work, when i use upgrade i get fail 1.
when i use restore it works fine until the first boot then my devices does a recovery and loads the original firmware??
i have even try to start with an restore (rooted version) then i abort the boot and try to do an upgrade (rooted version) and i stil getting Fail 1.
bot int RKbatch1.4 and RKBatch1.5
it has someting to do with boot loader 2.30 vs 1.18?
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