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[Q] How to root Alcatel OT 918 (Android 2.3.6)

OP remigereau

6th June 2012, 01:51 PM   |  #11  
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I have an Alcatel OT 918 (not N/D or anything else) running under v 2.3.6.
I tried the easy solutions (SuperOneClick & UnlockRoot) but as expected nothing worked.
I'd like to use the method proposed above, but as my phone is a 918 and not 918N, will the files in the links work, or will I simply brick my phone?

Thanks
8th June 2012, 07:26 PM   |  #12  
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hello all, I also I have the same problem, someone found a solution?
8th June 2012, 07:49 PM   |  #13  
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Quote:
Originally Posted by Baracuda86

I have an Alcatel OT 918 (not N/D or anything else) running under v 2.3.6.
I tried the easy solutions (SuperOneClick & UnlockRoot) but as expected nothing worked.
I'd like to use the method proposed above, but as my phone is a 918 and not 918N, will the files in the links work, or will I simply brick my phone?

Thanks

I bricked my OT-918 Android v2.3.6 when I tried alternative methods...

I guess it's waiting untill another exploit comes

EDIT:

I downloaded the scatter file from noxxious' attachment but because I bricked a phone already I decided to look up what those files actually are.

Microsoft says:
Quote:

The ARM development tools use scatter files to describe load regions, each of which might contain one or more execution regions

Also saying: Wrong scatter file would mean wrong memory is overwritten which will obviously lead to a brick (eg, phone tries to find OS, but because OS is not written in the correct place it cannot load it. Exactly what happened to my phone)

After some searching I discovered that you can easily retrieve the memory regions with ADB.

commandline:
Code:
adb wait-for-device
adb shell "cat proc/*" > device_info.txt
This will give you a nice text file with much information about your device...

Interesting part is this:
Code:
dev:    size   erasesize  name
mtd0: 00040000 00020000 "preloader"
mtd1: 000c0000 00020000 "dsp_bl"
mtd2: 00080000 00020000 "pro_info"
mtd3: 00300000 00020000 "nvram"
mtd4: 00020000 00020000 "seccnfg"
mtd5: 00060000 00020000 "uboot"
mtd6: 00600000 00020000 "boot"
mtd7: 00600000 00020000 "recovery" <- Seems like we need this region
mtd8: 00120000 00020000 "secstatic"
mtd9: 00060000 00020000 "misc"
mtd10: 00300000 00020000 "logo"
mtd11: 000a0000 00020000 "expdb"
mtd12: 07300000 00020000 "system"
mtd13: 09100000 00020000 "custpack"
mtd14: 03c00000 00020000 "cache"
mtd15: 09fa0000 00020000 "userdata"
If you think logically (and know a little about hexadecimal stuff) there is no space between the regions...

Meaning we can calculate the addresses of all memory pages. For example (we start at 0x0)
PRELOADER = 0x0 (with size 0x00040000) out of this follows that the next region should be at 0x0+0x00040000 = 0x00040000
meaning:
DSP_BL = 0x40000 (size = 0xC0000)
following that PRO_INFO should be located at 0x40000+0xC0000=0x100000

I'm just posting a little of my research... Maybe someone with more experience knows if I can use the same scatter file as noxxious attached...

@others with an OT-918/918N/D/M: Please also try to retrieve the memory regions so we can compare... Maybe those regions are dynamic. I don't know any android developing
Last edited by mr.exodia; 8th June 2012 at 10:16 PM. Reason: Updates on topic...
8th June 2012, 11:43 PM   |  #14  
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Sorry for bumping, but editing the old post failed on android. App doesnt seem to support it either.

Anyways, I calculated the offsets for my device and they match the new scatter file almost perfectly...

The older file, which I used to brick my previous phone did not match!

Please see attached file for more info...

Greetings

Sent from my ALCATEL ONE TOUCH 918 using XDA
Attached Files
File Type: txt scatter.txt - [Click for QR Code] (1.2 KB, 839 views)
Last edited by mr.exodia; 9th June 2012 at 12:20 PM. Reason: Attached scatter.txt
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9th June 2012, 10:47 AM   |  #15  
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I found this video on Youtube, I hope it helps.

http://www.youtube.com/watch?v=RRdgPgI8cbc
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9th June 2012, 12:06 PM   |  #16  
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Quote:
Originally Posted by YoursTruly98

I found this video on Youtube, I hope it helps.

http://www.youtube.com/watch?v=RRdgPgI8cbc

It's actually outdated...

/forum.xda-developers.com/showthread.php?t=747598 <- 2010 post...

Thanks anyways.

I attached the full pack that enables you to root your Alcatel OT-918 Gingerbread v2.3.6



Greetings
Attached Files
File Type: rar RootAlcatelOT918.rar - [Click for QR Code] (7.57 MB, 8160 views)
Last edited by mr.exodia; 10th June 2012 at 04:50 PM. Reason: It worked!!!
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11th June 2012, 10:10 AM   |  #17  
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Wink Solution
Quote:
Originally Posted by remigereau

Hello, I have this phone Alcatel OT 918 (without N or D) with android 2.3.6, i don't find nothing in the forums for the root method, I try superoneclick 2.3.3, unlockroot23 and the OT 918D method, and nothing. I can't root it. Somebody can help me? Thank you.

Hello, in this post you have the solution...:

http://forum.xda-developers.com/show...php?p=27153234
11th June 2012, 09:04 PM   |  #18  
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error 8100
Hello mr.exodia

I've the ot918 (without N or D). My relase is 2.3.6 (6573)
Your tuto doesn't work on my phone.
I've download your files.

After 15 second, I have the following error at step 8 :
SP FLASH TOOL ERROR 8100)
Can not find USB port !

I have somme questions :
The phone sould be on or off when I plugg the cable ?
If it is on, the phone ask me to mount the drive. What should I do ?

May be I don't have the good drivers.
Could you help me please...

Ricky
11th June 2012, 09:58 PM   |  #19  
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Good question
Quote:
Originally Posted by Ricky074

Hello mr.exodia

I've the ot918 (without N or D). My relase is 2.3.6 (6573)
Your tuto doesn't work on my phone.
I've download your files.

After 15 second, I have the following error at step 8 :
SP FLASH TOOL ERROR 8100)
Can not find USB port !

I have somme questions :
The phone sould be on or off when I plugg the cable ?
If it is on, the phone ask me to mount the drive. What should I do ?

May be I don't have the good drivers.
Could you help me please...

Ricky

Hmm,

I think you don't actually have the drivers... I first downloaded the One Touch Upgrade (/alcatelonetouch.com/nl/downloads/otu/one-touch-upgrade-s-1-7-9-setup.exe)

And I think drivers are installed automatically. (I attached the usb_driver directory, direct copy from that tool)

And your phone must be turned off. Just wait until it's fully powered-off and then plugin USB cable. You should get a "Install Driver?" popup... (If you haven't installed a driver already)

Long story short:
- Install Drivers (Download Tool or use attached file)
- Turn off phone
- Plug in to make sure windows 'knows' the device
- Unplug your phone
- Follow steps of flashing custom recovery
Attached Files
File Type: rar usb_driver.rar - [Click for QR Code] (684.9 KB, 2130 views)
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11th June 2012, 10:53 PM   |  #20  
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ok !
dear mr.exodia

I've installed your driver and it works perfectly !
My phone is root now !

Thanks a lot...
Ricky

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