[Android Software Development] neo.xda:
Hi everybody,

I have this model :

Xiaomi Mi laser UST Projector 150" (international) / MiProjA1 / model: MJJGYY02FM / codename: anglee

I would like to root the device, however I found no information about it except on this forum. It was mentioned in a post from 2022 that root was not possible then, is the situation has evolved since or not really?

I am running android TV version 9.0.0.1911 (PQ3B.190705.003.1911) on it, is there any vulnerability that one can exploit to gain root access?

I have tried to follow this guide with UART: https://xdaforums.com/t/guide-recov...-led-laser-projector-tv.3851755/post-77860186

Everything was ok until I got the in the terminal and try to run the mount command (busybox mount /dev/block/sda1 /sdcard). Even though I am on a root terminal, SELinux seams to be enforced, and I get this type of messages when I try to mount my usb key :

busybox mount /dev/block/sda1 /sdcard
[ 6243.827167@1] audit: type=1400 audit(1563932651.444:512): avc: denied { mounton } for pid=3020 comm="busybox" path="/sdcard" dev="rootfs" ino=11438 scontext=u:r:shell:s0 tcontext=u:object_r:rootfs:s0 tclass=dir permissive=0
[ 6243.841606@1] audit: type=1400 audit(1563932651.460:513): avc: denied { mounton } for pid=3020 comm="busybox" path="/sdcard" dev="rootfs" ino=11438 scontext=u:r:shell:s0 tcontext=u:object_r:rootfs:s0 tclass=dir permissive=0
[ 6243.861503@1] audit: type=1400 audit(1563932651.480:514): avc: denied { mounton } for pid=3020 comm="busybox" path="/sdcard" dev="rootfs" ino=11438 scontext=u:r:shell:s0 tcontext=u:object_r:rootfs:s0 tclass=dir permissive=0
[ 6243.881408@1] audit: type=1400 audit(1563932651.500:515): avc: denied { mounton } for pid=3020 comm="busybox" path="/sdcard" dev="rootfs" ino=11438 scontext=u:r:shell:s0 tcontext=u:object_r:rootfs:s0 tclass=dir permissive=0
[ 6243.901352@1] audit: type=1400 audit(1563932651.520:516): avc: denied { mounton } for pid=3020 comm="busybox" path="/sdcard" dev="rootfs" ino=11438 scontext=u:r:shell:s0 tcontext=u:object_r:rootfs:s0 tclass=dir permissive=0
[ 6243.921272@1] audit: type=1400 audit(1563932651.540:517): avc: denied { mounton } for pid=3020 comm="busybox" path="/sdcard" dev="rootfs" ino=11438 scontext=u:r:shell:s0 tcontext=u:object_r:rootfs:s0 tclass=dir permissive=0
[ 6243.941187@1] audit: type=1400 audit(1563932651.560:518): avc: denied { mounton } for pid=3020 comm="busybox" path="/sdcard" dev="rootfs" ino=11438 scontext=u:r:shell:s0 tcontext=u:object_r:rootfs:s0 tclass=dir permissive=0
[ 6243.961098@1] audit: type=1400 audit(1563932651.580:519): avc: denied { mounton } for pid=3020 comm="busybox" path="/sdcard" dev="rootfs" ino=11438 scontext=u:r:shell:s0 tcontext=u:object_r:rootfs:s0 tclass=dir permissive=0
[ 6243.981021@1] audit: type=1400 audit(1563932651.600:520): avc: denied { mounton } for pid=3020 comm="busybox" path="/sdcard" dev="rootfs" ino=11438 scontext=u:r:shell:s0 tcontext=u:object_r:rootfs:s0 tclass=dir permissive=0
[ 6244.000958@1] audit: type=1400 audit(1563932651.620:521): avc: denied { mounton } for pid=3020 comm="busybox" path="/sdcard" dev="rootfs" ino=11438 scontext=u:r:shell:s0 tcontext=u:object_r:rootfs:s0 tclass=dir permissive=0
mount: mounting /dev/block/sda1 on /sdcard failed: Permission denied

I am not able to create a directory. Can somebody help me to get around this restriction, so I can try the rest of the guide and hopefully try to get root access on my device.

Thanks in advance to anybody that can help