MP 809T

[MKKLR21]

Hi,

I created a custom ROM for our device: [Only registered and activated users can see links Click here to register]

I hope you'll find it useful and rate 5 stars at needrom.com.

[mirandam]

In my ROM version 109_v82_hydy_hd_20131225 there's a setting "to.secure" in build.prop. It's set to 1 by default. When I set it to 0, I'm able to mount /system r/w (there's "ro.secure" in default.prop, which is set to 1).

I read back the system partition with flash tool, mounted it but it was still read only even on pc.
Finally i made a backup from cwm, edited the build.prop in system.tar.a, by adding the to.secure=0, and restored it. After boot, i checked the build.prop and it was still stock! "to.secure=0" wasn't there, but system is writable now.
Odd enough

I had the same problem with a different phone (IPH-3). Created the system.img with droidtools, mounted it on ubuntu, but no way to make modifications, whatever I did it stayed RO. So I did some searching and created a new .img file on ubuntu, same size formatted ext4 and it mounted RW perfectly. Next I copied the other mounted system image contents to it and now I could change it.
However even changing the ro.secure param it didn't change RW on the phone, back to editing I checked init.rc to find where remounts of /system were done. Changed all of them to rw, and bingo it worked.
Even though this seems to be dangerous as it's supposed to leave system in rw, it didn't. Somewhere it gets to be remounted in ro, but after my reflash I cheched with root-explorer and adb to see if I was able to remount in rw, and it worked.

Hope I won't have to go through all of this when my 809T (octa) arrives, although my experience helps a lot for sure.

[MKKLR21]

System partition of my custom ROM is definitely r/w mountable without any further modifications.

P.S. My ROM is only for 1/4GB version, so you shouldn't use it!

[mirandam]

Don't worry, I won't, I know about the two versions but I have no intend to change my rom from stock.
I don't need a different recovery as I can flash all I want with flash tools and rooting is the first thing I do after starting up the phone for the first time.
I don't use the update.zip route for play-store install, I do that manually as it gives me more control over the process and it's not a big deal, just a matter of putting the right apps in system, setting owner and perms correctly and go for it.
On small memory phone I use link2sd which requires its own mounting history. Since I'm used to linux from day one, I'm quite comfortable at using android on a shell basis.
Although my modifications to the stock-rom could be considered "custom" I tend to think they are more like "enhancements" as they do not touch the basic operation of the hardware. I've use CM-roms on tablets and phones but there's nearly always something that fails (not to take credit away from the developers) which I why I prefer to stick to the factory rom, only to change what I need.

[jerzyjerzy]

It seems to me that making a /system backup in CWM, editing the build.prop in system.tar.a, by adding the ro.secure=0 line, and restoring back /system from backup is the safest way. The only important thing is a necessity to update the MD5 checksum for system.tar.a in the nandroid.md5 file in the backup folder.

For example, the nandroid.md5 file contents may be:

d41d8cd98f00b204e9800998ecf8427e system.ext4.tar
8d15bd42ba1de330ed12b8b6e6f19667 system.ext4.tar.a
d41d8cd98f00b204e9800998ecf8427e .android_secure.vfat.tar
2d919b5c5a6be9d82fb3dd050b0f9223 .android_secure.vfat.tar.a

You have to generate the new checksum for edited system.ext4.tar.a (using for example WinMD5 program for Windows), replace the previous checksum with a new value, then save the nandroid.md5 file.

Then you can use the whole set to restore /system using Advanced Restore in CWM.

Your system will be writable after that (i.e. RW remountable).

[savior]

Hi
Does this phone have Amoled display?and is it used in the mt6592 powered one?how is the quality of display? Tnx

[kermmet]

Hello I have a MP 809T with a MTK MT6592 Octo running at 1.7G with 3GB of ram according to anTuTu x benchmark and the build number is 2719_v92_hydy_HD_oppo_20140122. My problem is the internal memory is only 4Gb but their is 12Gb of phone memory that I can't touch and would like to repartition the phones memory so that I have all the 16Gb that I am supposed to have. I think I can do this with CWM but I do not want to hard brick my phone any help would be much appreciated.

[savior]

Hello I have a MP 809T with a MTK MT6592 Octo running at 1.7G with 3GB of ram according to anTuTu x benchmark and the build number is 2719_v92_hydy_HD_oppo_20140122. My problem is the internal memory is only 4Gb but their is 12Gb of phone memory that I can't touch and would like to repartition the phones memory so that I have all the 16Gb that I am supposed to have. I think I can do this with CWM but I do not want to hard brick my phone any help would be much appreciated.

Hi
Does your phone have amoled display?Or it is IPS? Tnx

[jerzyjerzy]

AFAIK, it is IPS.

How can I tell a difference?

[Yaelede]

I have read through all the pages in this topic, and I'm still uncertain about the RAM of this phone.
Could someone confirm that 3GB RAM is fake? ALL sysinfo apps shows 3GB, and the phone works without lagging, so..

Anyway, I love this phone, recently I have rooted it quite easily.
Is it worth to install a custom ROM on this phone? Advantages?

ROM version 109_v82_hydy_hd_20131225