I think I may have this issue. I finally got my tab to read the SD card and could actually find the zip files but when I tried to patch my 3 zips it kept saying after each file
updating partition details
FAILED TO MOUNT '/DATA' (DEVICE OR RESOURCE BUSY)
I read through the Lineage one and it said
E3004: this package is for device:tb-8504X etc, this device is tb_8504x
Updater process ended with ERROR: 7
Updating partition details...
Failed to mount '/data' (AGAIN)
If I unpack the zip on my PC and sort the meta stuff out I'm hoping it will work.
Is there some partition thing I'm meant to do?
I have just upgraded from the stock firmware to resolve a power consumption issue. The power issue is now resolved but unfortunately I believe I may have uncovered a bug. I use the tab as a dedicated remote control that runs RTIPanel and for the most part it works great. The anomaly I have found is that when the tab is woken up, although the screen accepts touch commands the screen is still sleeping except for the time in the top left hand corner. Commands are actually sent when the screen is touched but there is no visual feedback until either the home button or the app list button is pressed. After pressing either of these buttons the screen displays the current status.
Is there any chance of a fix for this issue?
/* * I'm not responsible for bricked devices, dead SD cards, thermonuclear war, or you getting fired because the alarm app failed (like it did for me...). * Please do some research if you have any concerns about features included in the products you find here before flashing it! * YOU are choosing to make these modifications, and if you point the finger at me for messing up your device, I will laugh at you. * Your warranty will be void if you tamper with any part of your device / software. * Same statement for XDA. */
Managed to install Lineage on my TB-8504F, but it doesnt get past the Lineage boot animation, no matter how long I leave it.
Pushed TWRP to Recovery, formatted as required. Had to amend the Lineage image to remove the device checks, as although I definately have TB-8504F, it didnt like that TWRP reported it as TB_8504f - ?
Installed and installed GAPPS, cant get past load screen.
I do have a backup, so not concerned, but frustrated!
Any help appreciated