[Question] Full factory reset on devices? and other question.

[twenex]

Hi first of all i'm sorry if this is a wrong section of the forum to ask question, if so i hope mod can help move to correct section. And if the question already been asked and answered i hope you can point me to the thread. Thanks.

Question 1: Some of china phone i own i believe doesn't really do factory reset. Everytime i do factory reset it still left apps that i download from Play Store. Perhaps /data/ partition? Can someone kind enough to guide me correct way to do full factory reset of the devices that just like new?

Question 2: Some of the china phone i own always changes mac address 00:08:22:xx:xx:xx every boot. How can i prevent this? possible?

Question 3: I follow the guide to flash CWM Recovery to model below (GT-N9000) but the CWM is upside down / inverted? How to fix this? Or perhaps someone can share me CWM Recovery for all the devices below?

Question 4 Would someone kind enough to share/upload/point me to the latest clean ROM for below devices, Im sorry i don't know the maker.

1:

Code:

Hardware : MT6575
Model : GT-I908
Build number : ALPS.GB2.MP.V2.21
Build date UTC : 20130903-034914
Android  v : 2.3.6
Baseband v: MAUI.11AMD.W11.50.SP.V30.P2, 2013/04/23 16:21
Kernel v : 2.6.35.7 (steven@steven-pc) (gcc version 4.4.3 (GCC) ) #1  Tue Sep 3 11:45:55 CST 2013
Uboot build v : MAIN2.2.ubt.4080
LCD Driver IC : 1-NT35510_480X800_dsi

2:

Code:

Hardware : MT6577
Model : GT-N7100
Build number : IMM76D.N7100XXBLFB
Build date UTC : 20130328-081717
Android  v : 4.1.1
Baseband v: MAUI.11AMD.W12.22.SP.V14, 2012/10/08 18:03
Kernel v : 3.0.13 (liuxiuyun@mht-05) (gcc version 4.4.3 (GCC) ) #1 SMP  Thu Mar 28 16:15:47 CST 2013
Uboot build v : MAIN2.2.ubt.2720
LCD Driver IC : 1-nt35516_dsi

3:

Code:

Hardware : MT6589
Model : GT-N9000
Build number : JDQ39.N9000XXUAMDF
Build date UTC : 20131008-132838
Android  v : 4.3
Baseband v: MOLY.WR8.W1248.MD.WG.MP.V7, 2013/06/19 00:25
Kernel v : 3.4.5 (linux@XzServer) (gcc version 4.6.x-google 20120106 (prerelease) (GCC) ) #1 SMP  Tue Oct 8 21:23:53 CST 2013
Uboot build v : -----
LCD Driver IC : 1-otm1283a_hd720_dsi

Thanks!

[GizBeat]

1. Go into recovery, select factory reset and approve. Then wipe dalvik, cache, data. Do NOT wipe system. If downloaded apps are remaining after this, yes it's very strange. Is this the procedure you're following? Sometimes the system ROM will have 'external' apps as part of the ROM, so make sure it's not these that you're talking about. I mean, download something completely fresh that's surely not already part of the ROM.

2. This can be fixed. See this post [Only registered and activated users can see links Click here to register] , and [Only registered and activated users can see links Click here to register]

3. So this is not the exact CWM for your phone and firmware version. See the CWM tutorials. There are several here.

4. See needrom.com for your firmware needs.