Putting CyanogenMod 12 Onto Samsung Galaxy Tab Pro 8.4
March 6, 2015
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The official instructions for this are at CyanogenMod’s wiki. However there are reports that Heimdall does not work on latest tablets with the following error:
Downloading device's PIT file...
ERROR: Failed to send request to end PIT file transfer!
Instead, following the links provided in this XDA thread, one can download a toolkit from autoroot.chainfire.eu for the SM-T320 model. After extracting this and running the tool (on Windows) Odin3-v3.07.exe you click on the “PDA” button and open the .tar.md5 file included in the package. On holding down the VOLUME DOWN key when powering-on the tablet you will see the following screen at which it is okay to proceed to send the loaded .tar.md5 file to the tablet.
Samsung Pro Tab 8.4 Custom OS Load Screen
Next download a recovery which can be found at this XDA thread. Reboot the device holding the VOLUME DOWN key again and use the Odin3 tool again but this time loading the recovery .tar.md5 file.
Finally reboot into recovery by holding the VOLUME UP key on power-up. Then you can sideload the CyanogenMod zip from ADB by selecting “Install from zip” then select loading from sideload. If you see the option “Apply update from ADB” then you have got the stock recovery and not the CyanogenMod recovery installed.
One problem is that, annoyingly, on first boot into CyanogenMod 12 the modal dialog box “Unfortunately, Email Has Stopped” keeps coming over and over and over and you have you just keep clicking “OK” and trying to quickly hit the “next” key through the default options in between until you get to the default screen. At which point deleting the Email client is probably the best thing to do.