Coby Kyros MID1042 Problem

[mvancil]

I have a Coby Kyros MID1042 that has a corrupted Superuser.apk

I have attempted to reset to factory and to re-root using ADB. This has failed, because the file already exists and all of the rooting tools (and manual attempts) to copy the file will not overwrite the existing. I am able to boot the tablet as normal and I can access the system recovery, but I cannot use any of the custom roms because they fail signature verification. I cannot upgrade the rom manager because I can't get root.

So....my question is this....does anyone have the stock rom for the MID1042 that will pass signature verification? Or any other rom for that matter that will pass?

 

[vampirefo.]

Use adb to root your device, then use adb to replace Superuser.apk.

 

[mvancil]

Use adb to root your device, then use adb to replace Superuser.apk.

As stated before....that didn't work.

 

[vampirefo.]

no way it can't work, you are simply do it wrong, post exact commands you are using.

 

[mvancil]

no way it can't work, you are simply do it wrong, post exact commands you are using.

It's absolutely does not work. I do know what I'm doing. The problem is that it will not overwrite any files that already exist, and I cannot erase them without root access. Here's an example of the commands issued...

adb.exe push data /data/local/tmp/
adb.exe shell chmod 0777 /data/local/tmp/mempodroid
adb.exe shell /data/local/tmp/mempodroid 0xd7cc 0xad27 sh /data/local/tmp/root.sh

 

[mvancil]

I also attempted to use the -f flag to force the overwrite, but that doesn't work.

 

[mvancil]

Oh....and the root script...

busybox mount -o remount,rw /system


cd /data/local/tmp
busybox cp su /system/xbin/su
busybox cp reboot-recovery /system/bin/reboot-recovery
chmod 755 /system/bin/reboot-recovery
chown 0:0 /system/xbin/su
chmod 6755 /system/xbin/su
busybox ln -sf /system/xbin/su /system/bin/su


busybox cp Superuser.apk /system/app/Superuser.apk
chown 0:0 /system/app/Superuser.apk
chmod 0644 /system/app/Superuser.apk

 

[vampirefo.]

adb shell

su

mount -o remount,rw /system

rm -r /system/app/Superuser.apk

 

[mvancil]

adb server is out of date. killing...
* daemon started successfully *
shell@android:/ $ su
su
Segmentation fault
139|shell@android:/ $ mount -o remount,rw /system


rm -r /system/app/Superuser.apkmount -o remount,rw /system


mount: Operation not permitted
255|shell@android:/ $
255|shell@android:/ $

 

[vampirefo.]

ok so you aren't rooted, you need root to remove /system files.

 

[mvancil]

It was rooted...the files are now corrupted...hence the need for original post.

Unless you know a way to force an overwrite while rooting?

 

[vampirefo.]

your su binary appears to be corrupt, once you become root $ changes to #

 

[vampirefo.]

rooting has nothing to so with Superuser.apk, you must be root before you can even push the Superuser.apk.

 

[mvancil]

We still have yet to hit on anything I didn't already know.

 

[vampirefo.]

adb push data /data/local/tmp/

adb shell

chmod 0777 /data/local/tmp/mempodroid

/data/local/tmp/mempodroid 0xd7cc 0xad27 sh /data/local/tmp/root.sh

su

$ should now change to #