HTC U Play - No root access after flashing insecure boot image This is my first post here and I hope I am posting it in the right place.

I have modified stock boot image following a few guides on XDA. Now running "id" command in adb shell returns:

root@htc_alpine_uhl:/ # id
id
uid=0(root) gid=0(root) groups=0(root) context=u:r:shell:s0


But I am unable to mount /system as rw or even execute simple tasks like "ls /data/media/0" etc.

I am trying to do all this because there is no custom recovery or any other root process available for this device until now.

Any kind of help will be greatly appreciated. I am new with this stuff so please bear with me.

Thanks for reading.
The correct way to root your phone is to flash a custom recovery then install SuperSU zip, modding the boot will not give you root access until there is a real su binary on the system

Have you checked if su command works on your phone or not?