[One (M8) General] cdarkie:
Did this several times keep getting dd: /dev/block/mm.............: Permission denied and my modelid needs to be fixed to flash a ruu :crying::crying: Please help me someone

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this thread is for the folks who wish tochage their MID in order to fully convert a device and recieve OTA updates. the method described here is not the only way to skin the cat,but as long as your careful the risk is very minimal, its quick and easy and doesnt require any hboot downgrades,eng hboot install,data loss,or having to run an ruu.

please note

that s-off is required!

credits:

-beaups for schooling me on the echo command protocol

-kdj67f for dumping partitions from his java card s-offed phone

-davehasninjas for dumping rumrunner s offed partitions

-andybones for testing on a vzw device

*i dont have m8 yet. if you want to test,ill add you to the credits.

standard disclaimer:

use this information at your own risk. it has been tested,but copying the command incorrectly could have consequences. if you melt your phone into a smoldering little pile of aluminum goo,

its not my fault.

IF you are an advanced user with adb/fastboot set up and some basic knowlede of the cmd window,you can skip to #2

1)set up adb

(windows 7 and older)

-download this file

-install drivers: if you have htc sync installed,you should allready have drivers. if not,you can install htc sync,or install these modified htc drivers from revolutionary (driver mirror)

-unzip your miniadb_v1031.zip file. this is native funtionality in windows 7. you otherwise may need a utility such as "7-zip" to extract,or unzip it. place the

unzipped

folder onto the root of your C drive on your PC. root means the top level,not inside any folders. so just copy and paste,or drag and drop the folder onto C with everything else that is there. you may want to rename it to "miniadb_m7" since youll be putting some device specific files in here.

-open a command window. on windows 7,click the start bubble in the lower left and type "command" in the search box. xp i believe is similar or the same. doing this should open a small black command window.

-change to your miniadb_m7 directory. type the following at the prompt in your cmd window:

cd c:\miniadb_m7

your command promt should change to "c:miniadb_m7>" provided you: 1)unzipped the miniadb_v1031 zip file,and 2)put the folder on your c drive,and 3)entered the name of the folder correctly ("miniadb_m7" in this case)

-now make sure usb debugging is checked in developer options(you will need to turn it on first),and plug your phone into your PC with a usb cable

-make sure your phone is being recognized- type:

adb devices

if your drivers are installed correctly,this should return your phones serial number. you should hear the "found device" noises when you plug your phone in. if it starts installing drivers,wait for it to finish before typing the adb devices command.

if you get your serial number back,then enter this command:

adb reboot bootloader

this should take your phone to the "fastboot" screen,wich is white with colored letters. this is one mode of your bootloaders interactive modes. at the top youll see fastboot devices as confirmation youre in fastboot.

now enter:

fastboot devices

again,this should return your phones serial number. you should hear the "found device" noises when you plug your phone in. if it starts installing drivers,wait for it to finish before typing the adb devices command.

if you get your serial number back,you can enter the following to boot back to the phones OS:

fastboot reboot

and now,youve installed adb/fastboot and tested youre phones drivers. if at either spot,you have trouble and dont get your serial number back,there is some sort of connection issue. use these steps to troubleshoot:

this process,in your cmd window,should look something like this:

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\Scott>[COLOR="red"]cd c:\miniadb_m7[/COLOR]

c:\miniadb_m7>adb devices
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
List of devices attached
FAxxxxxxxxxx device

c:\miniadb_m7>[COLOR="red"]adb reboot bootloader[/COLOR]

c:\miniadb_m7>[COLOR="red"]fastboot devices[/COLOR]
FAxxxxxxxxxx fastboot

c:\miniadb_m7>[COLOR="red"]fastboot reboot[/COLOR]
rebooting...

finished. total time: 0.037s

c:\miniadb_m7>

2)change your MID

warning: *do

not

try and type the command. please

copy and paste it

-

AT&T, unlocked, developer MID:

enter the following:

adb shell

su (if needed to get a # prompt)

[B]echo -ne '\x30\x00\x50\x00\x36\x00\x42\x00\x31\x00\x32\x00\x30\x00\x30\x00\x30' | dd of=/dev/block/mmcblk0p5 bs=1 seek=16384[/B]

(the above is one big long command. make sure you copy it all,and dont get extra spaces when you paste it.)

exit

adb reboot bootloader

fastboot getvar mid (or getvar all)

verify 0P6B12000 for modelid

fastboot reboot

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-

google play MID:

enter the following:

adb shell

su (if needed to get a # prompt)

[B]echo -ne '\x30\x00\x50\x00\x36\x00\x42\x00\x31\x00\x37\x00\x30\x00\x30\x00\x30' | dd of=/dev/block/mmcblk0p5 bs=1 seek=16384[/B]

(the above is one big long command. make sure you copy it all,and dont get extra spaces when you paste it.)

exit

adb reboot bootloader

fastboot getvar mid (or getvar all)

verify 0P6B17000 for modelid

fastboot reboot

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-

t mobile MID:

enter the following:

adb shell

su (if needed to get a # prompt)

[B]echo -ne '\x30\x00\x50\x00\x36\x00\x42\x00\x31\x00\x33\x00\x30\x00\x30\x00\x30' | dd of=/dev/block/mmcblk0p5 bs=1 seek=16384[/B]

(the above is one big long command. make sure you copy it all,and dont get extra spaces when you paste it.)

exit

adb reboot bootloader

fastboot getvar mid (or getvar all)

verify 0P6B13000 for modelid

fastboot reboot

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-

HTC_Europe MID:

enter the following:

adb shell

su (if needed to get a # prompt)

[B]echo -ne '\x30\x00\x50\x00\x36\x00\x42\x00\x31\x00\x30\x00\x30\x00\x30\x00\x30' | dd of=/dev/block/mmcblk0p5 bs=1 seek=16384[/B]

(the above is one big long command. make sure you copy it all,and dont get extra spaces when you paste it.)

exit

adb reboot bootloader

fastboot getvar mid (or getvar all)

verify 0P6B10000 for modelid

fastboot reboot

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your command window should look like this:

c:\miniadb_m7>[COLOR="red"]adb shell[/COLOR]
root@m7:/ # [COLOR="Red"]echo -ne '\x50\x00\x4e\x00\x30\x00\x37\x00\x33\x00\x31\x00\x30\x00\x
30\x00\x30' | dd of=/dev/block/mmcblk0p6 bs=1 seek=16384[/COLOR]
00\x30' | dd of=/dev/block/mmcblk0p6 bs=1 seek=16384 <
17+0 records in
17+0 records out
17 bytes transferred in 0.009 secs (1888 bytes/sec)
root@m7:/ # [COLOR="red"]exit[/COLOR]
exit

c:\miniadb_m7>[COLOR="red"]adb reboot bootloader[/COLOR]

c:\miniadb_m7>[COLOR="red"]fastboot getvar all[/COLOR]
(bootloader) version: 0.5
(bootloader) version-bootloader: 1.44.0000
(bootloader) version-baseband: 4A.17.3250.20
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 1.27.531.8
(bootloader) version-misc: PVT SHIP S-OFF
(bootloader) serialno: HTxxxxxxxxxx
(bootloader) imei: xxxxxxxxxxxxxxx
(bootloader) meid: 00000000000000
(bootloader) product: m7_ul
(bootloader) platform: HBOOT-8064
(bootloader) modelid: PN0731000 [COLOR="Blue"]<-looky[/COLOR]
(bootloader) cidnum: 11111111
(bootloader) battery-status: good
(bootloader) battery-voltage: 4175mV
(bootloader) partition-layout: Generic
(bootloader) security: off
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: dirty-f188f379dbbfee373cd551f7bc62b8435
getvar:all FAILED (unknown status code)
finished. total time: 0.092s

c:\miniadb_m7>[COLOR="Red"]fastboot reboot[/COLOR]
rebooting...
(bootloader) hbootpreupdate: 11

finished. total time: 7.288s

some other useful links:

remove tampered banner: http://xdaforums.com/showthread.php?t=2708565

change lock status flag(lock/unlock bootloader): http://xdaforums.com/showthread.php?t=2708571[/QUOTE]