[Android Q&A, Help & Troubleshooting] mini4mw:
I suppose I'm just talking to myself, but if I ever get this done, at least there are some notes...

So I have the tablet booting, but the screen doesn't really work.. If I hit the Android main buttons - home, back, all apps, I get nothing. I can hit volume up and down and screen shows the response. I can't hit any apps on the home screen, no response. I can hold down on the screen and I get a widget screen and a pop-up asking "allow launcher 3 access to photos, files, media on device" but I can't click allow/deny. Some permissions screwed up it would seem from messing with recovery or flashing twrp version that doesn't work.

Anyhow, I can reboot to bootloader and I can get root using adb. I have an identical tablet from another Yamaha SxS. I'm going to get that one, copy the recovery partition and put it on the broken one. We'll see if that does anything.

Planning on trying this:

dd if=/dev/block/platform/soc.0/7824900.sdhci/by-name/recovery of=recovery.img

adb pull /storage/self/primary/Download/recovery.img recovery.img

(this works from bad tablet - don't have good one on hand currently)

and then try

adb push recovery.img /dev/block/platform/soc.0/7824900.sdhci/by-name/recovery

not sure if that last cmd will work or not.

Now this tablet is 'broken' as it won't run the yamaha app due to permission issues creating folders when it starts the app. Now that I've figured out how to get root from adb, if I can get the tablet booting correctly I'll try that out. I suppose I may need to copy the boot partition from the good to bad as well?

Hopefully it gets it running like a 'normal' adventure pro and then I can go back to trying to get root access in general. I should be able to that somehow with the boot.img, right? back to research...

here's the partition list on this thing:

root@chiron:/dev/block/platform/soc.0/7824900.sdhci/by-name # ls -al

ls -al

lrwxrwxrwx root root 2017-01-06 04:38 DDR -> /dev/block/mmcblk0p17

lrwxrwxrwx root root 2017-01-06 04:38 aboot -> /dev/block/mmcblk0p4

lrwxrwxrwx root root 2017-01-06 04:38 abootbak -> /dev/block/mmcblk0p5

lrwxrwxrwx root root 2017-01-06 04:38 boot -> /dev/block/mmcblk0p20

lrwxrwxrwx root root 2017-01-06 04:38 cache -> /dev/block/mmcblk0p23

lrwxrwxrwx root root 2017-01-06 04:38 config -> /dev/block/mmcblk0p28

lrwxrwxrwx root root 2017-01-06 04:38 devinfo -> /dev/block/mmcblk0p25

lrwxrwxrwx root root 2017-01-06 04:38 fsc -> /dev/block/mmcblk0p14

lrwxrwxrwx root root 2017-01-06 04:38 fsg -> /dev/block/mmcblk0p18

lrwxrwxrwx root root 2017-01-06 04:38 keystore -> /dev/block/mmcblk0p26

lrwxrwxrwx root root 2017-01-06 04:38 misc -> /dev/block/mmcblk0p13

lrwxrwxrwx root root 2017-01-06 04:38 modem -> /dev/block/mmcblk0p1

lrwxrwxrwx root root 2017-01-06 04:38 modemst1 -> /dev/block/mmcblk0p11

lrwxrwxrwx root root 2017-01-06 04:38 modemst2 -> /dev/block/mmcblk0p12

lrwxrwxrwx root root 2017-01-06 04:38 oem -> /dev/block/mmcblk0p27

lrwxrwxrwx root root 2017-01-06 04:38 pad -> /dev/block/mmcblk0p10

lrwxrwxrwx root root 2017-01-06 04:38 persist -> /dev/block/mmcblk0p22

lrwxrwxrwx root root 2017-01-06 04:38 recovery -> /dev/block/mmcblk0p24

lrwxrwxrwx root root 2017-01-06 04:38 reserved -> /dev/block/mmcblk0p29

lrwxrwxrwx root root 2017-01-06 04:38 rpm -> /dev/block/mmcblk0p6

lrwxrwxrwx root root 2017-01-06 04:38 rpmbak -> /dev/block/mmcblk0p7

lrwxrwxrwx root root 2017-01-06 04:38 sbl1 -> /dev/block/mmcblk0p2

lrwxrwxrwx root root 2017-01-06 04:38 sbl1bak -> /dev/block/mmcblk0p3

lrwxrwxrwx root root 2017-01-06 04:38 sec -> /dev/block/mmcblk0p19

lrwxrwxrwx root root 2017-01-06 04:38 splash -> /dev/block/mmcblk0p16

lrwxrwxrwx root root 2017-01-06 04:38 ssd -> /dev/block/mmcblk0p15

lrwxrwxrwx root root 2017-01-06 04:38 system -> /dev/block/mmcblk0p21

lrwxrwxrwx root root 2017-01-06 04:38 tz -> /dev/block/mmcblk0p8

lrwxrwxrwx root root 2017-01-06 04:38 tzbak -> /dev/block/mmcblk0p9

lrwxrwxrwx root root 2017-01-06 04:38 userdata -> /dev/block/mmcblk0p30

root@chiron:/dev/block/platform/soc.0/7824900.sdhci/by-name #