Database Develop

[Q] [noob][Xperia T][4.3] Update to hybrid 4.3

Hi all,
This is a noob question, I’m sorry, but I figured I’d post the question and explain what I understood so others could benefit. As I’m a new user, I’m posting here and not in the development section.
After looking at the new 4.3 ROMs, I figured peetr_ hybrid ROM (http://forum.xda-developers.com/showthread.php?t=2627922) looked good and I am now trying to figure out how to install it.
Right now, I have a Xperia T (LT30p) with CWM-based Recovery v6.0.2.7, Doomkernel 3.4.0 and XperimenT 2.3 (i.e. JB 4.1.2).
Here is how I planned to update [order and wording changed following Alex5699’s comments]:
1) Download a new Kernel, one of the two mentioned here: http://forum.xda-developers.com/showpost.php?p=49870676&postcount=13 . One of them has no recovery, so I figure that if I flash one without recovery, I will loose recovery? So I think I will choose this kernel http://forum.xda-developers.com/showthread.php?t=2604492 in its zipfile version and put it on the phone.
2) Download the zipfile from here http://forum.xda-developers.com/showthread.php?t=2627922 and put it on the phone.
3) Go into recovery.
4) Do a factory reset(=wipe data), wipe cache and wipe dalvik cache.
5) Flash the ROM. No reboot before the next step!
6) Flash the kernel.
7) Reboot and be happy.
I just wanted to check if this is the right order (if someone agrees I’ll update the post to remove the question marks) and that I’m wiping the right things. I suppose wiping these things does not erase the content on the virtual sdcard in the phone. At least that’s what I think I remember from last time.
Thank you very much in advance for your help. Have a great day!

xdasmile said:
Hi all,
This is a noob question, I’m sorry, but I figured I’d post the question and explain what I understood so others could benefit. As I’m a new user, I’m posting here and not in the development section.
After looking at the new 4.3 ROMs, I figured peetr_ hybrid ROM (http://forum.xda-developers.com/showthread.php?t=2627922) looked good and I am now trying to figure out how to install it.
Right now, I have a Xperia T (LT30p) with CWM-based Recovery v6.0.2.7, Doomkernel 3.4.0 and XperimenT 2.3 (i.e. JB 4.1.2).
Here is how I planned to update:
1) Download a new Kernel, one of the two mentioned here: http://forum.xda-developers.com/showpost.php?p=49870676&postcount=13 . One of them has no recovery, so I figure that if I flash one without recovery, I will loose recovery? So I think I will choose this kernel http://forum.xda-developers.com/showthread.php?t=2604492 in its zipfile version and put it on the phone.
2) Download the zipfile from here http://forum.xda-developers.com/showthread.php?t=2627922 and put it on the phone.
3) Go into recovery.
4) Do a factory reset? Wipe dalvik cache? Wipe data?
5) Flash the kernel.
6) Flash the ROM.
7) Reboot and be happy.
I just wanted to check if this is the right order (if someone agrees I’ll update the post to remove the question marks) and that I’m wiping the right things. I suppose wiping these things does not erase the content on the virtual sdcard in the phone. At least that’s what I think I remember from last time.
Thank you very much in advance for your help. Have a great day!
Click to expand...
Click to collapse
think u should flash rom first and then kernel.. but all othe other steps seems to be in order

Thank you
Alex5699 said:
think u should flash rom first and then kernel.. but all othe other steps seems to be in order
Click to expand...
Click to collapse
Thanks a lot for your reply!*I’ll update my post (if someone else reads it one day). As for the resets, I’ll update that too.

Sorry, just another question, I want to make sure the explanation is right. On the thread http://forum.xda-developers.com/showthread.php?t=2627922 , there are these two comments that made me think.
First, there is the prerequisite:
peetr_ said:
Prerequisites:
- Flashtool and recovery knowledge
- latest 4.3 firmware (mainly baseband/radio)(flashtool or official way)
- stock based 4.3 kernel
- working recovery
Click to expand...
Click to collapse
I’m not on a 4.3 firmware right now…
I thought I could get around this but then there is this explanation here:
peetr_ said:
Yes. But you must do both steps without rebooting between them. Also flash the v1.4 recovery, or you won't have your mac address restored.
And later I suggest to flash amss (baseband) from ftf.
Click to expand...
Click to collapse
which I’m still trying to understand, but I fear there’s something I’ve missed.
I’m sorry if I’m asking noob questions; if my questions are too annoying don’t mind, I’ll try to find the right solution and if I do, I’ll post it here.

xdasmile said:
Sorry, just another question, I want to make sure the explanation is right. On the thread http://forum.xda-developers.com/showthread.php?t=2627922 , there are these two comments that made me think.
First, there is the prerequisite:
I’m not on a 4.3 firmware right now…
I thought I could get around this but then there is this explanation here:
which I’m still trying to understand, but I fear there’s something I’ve missed.
I’m sorry if I’m asking noob questions; if my questions are too annoying don’t mind, I’ll try to find the right solution and if I do, I’ll post it here.
Click to expand...
Click to collapse
we do have an official 4.3 out now for the T so basically hes saying latest 4.3 firmware (mainly baseband/radio)(flashtool or official way)
- stock based 4.3 kernel
- working recovery is needed if u wanna flash the hybrid rom .. but since ur on a 4.1.2 rom you jus follow the steps u posted first .. and when they said to flash rom and then kernel without reboot they mean right after rom is install "while on 4.1" go to install again and select the kernel then once thats install then u reboot and allow your phone to boot up .. first time boot may take up to 5 mins so be patient

Alex5699 said:
we do have an official 4.3 out now for the T so basically hes saying latest 4.3 firmware (mainly baseband/radio)(flashtool or official way)
- stock based 4.3 kernel
- working recovery is needed if u wanna flash the hybrid rom .. but since ur on a 4.1.2 rom you jus follow the steps u posted first .. and when they said to flash rom and then kernel without reboot they mean right after rom is install "while on 4.1" go to install again and select the kernel then once thats install then u reboot and allow your phone to boot up .. first time boot may take up to 5 mins so be patient
Click to expand...
Click to collapse
Thanks a lot!
In other words, you’re saying (just to make sure I understood you correctly):
1) No reboot between flashing the ROM and the kernel. (I had understood that, but you’re right, I should correct that above, and I will).
2) It’s not an issue if I’m not already on a 4.3 kernel (although it’s written in the prerequisites), as long as I follow the instructions above. [For others reading this, there is a list with stock firmwares here for instance http://forum.xda-developers.com/showthread.php?t=2648320 .]
3) There will be no need for separate baseband flashing (there is an explanation video on youtube for the Xperia Z for those who don’t know how to do it, I can’t post the link as a xda-noob =D) or for flashing a separate recovery (since the mentioned kernel has already a built-in recovery) after following the instructions above, and no need to fear not recovering my mac-address.
Don’t worry, I’m not asking you to give me some kind of warranty, I’m just trying to make sure I understand what you’re saying.
Thanks again for being so prompt in answering!
If I manage to update properly I’ll post back!

[Q] Preperation for 4.3

In preparation for the update 4.3 I would like to ask a few questions. The Xperia SP is my first android phone, first android device for that matter; And being someone who always enjoys to tinker with things I quickly delved into the world of rooting and custom kernals.
But there are a few things I'm unsure about and would like to ask a few questions:
1) When I update to 4.3 will it erase many settings? Such as contacts, apps, root and bootloader? If so, can I use the CWM backup I have to restore all my previous settings whilst keep the 4.3 update?
The reasoning behind this is I had actually managed to root my phone without unlocking the bootloader. I had not known this at the time, I didn't understand the steps fully and thought I had unlocked the bootloader, which led my trying to install a custom kernal. (Of coarse this softbricked my phone, but it was easily fixable). So off I go to unlock the bootloader. I did not realise that doing so would wipe all settings on my phone. I panicked. It was 4am, my phone was back to being as fresh as a new born and I needed my phone for work in 3 hours. So I restored a backup I made with CWM and lo and behold, all my settings where back. Wallpaper and all. Even better, the bootloader and stayed unlocked.
2) What will happen to my custom kernal if I upgrade? I'm currently using Doomlords custom kernal and I really need to increase the sound levels on my phone (The xperia has some god awful sound levels, always so quiet). If it does remove the update will I be able to instal the custom Kernal again or will I have to search for a new one specifically for my phone and version?

1. Things like settings, apps and contacts will remain the same after update, but you will lose root (and your bootloader WILL BE unlocked coz you unlocked it before, right?)
2. Your custom kernel will be overwritten by the stock kernel from the update and you have to search for custom kernel made for 4.3
Sent from my C5303 using XDA Premium 4 mobile app
---------- Post added at 09:27 PM ---------- Previous post was at 09:19 PM ----------
Ad.1 I dont think you can restore CWM backup from your previous rom, it can cause bootloops or FCs, but you can try
Sent from my C5303 using XDA Premium 4 mobile app

Z1 how to install CWM on 4.4.4 official help !

Hello can anyone help me install a cwm for my 4.4.4 z1 c6903 unlocked bootloader (also rooted . version 4.4.4 with the .108 on the end) ?! I really want to flash a new custom rom for this phone and unlike samsung phones the tutorials on youtube for 4.4.4 are missing !

Drewmk20 said:
Hello can anyone help me install a cwm for my 4.4.4 z1 c6903 unlocked bootloader (also rooted . version 4.4.4 with the .108 on the end) ?! I really want to flash a new custom rom for this phone and unlike samsung phones the tutorials on youtube for 4.4.4 are missing !
Click to expand...
Click to collapse
Hi,
Check this out ...
http://prntscr.com/4ow7hp
Download file, then unzip. Run BAT file and follow screen directions. You will end up with three recoveries to choose from.

Need help
Hello, i'm newbie here, trying to learn some stuff, i searched the forum but i couldn't find it, i think this page is most appropriate to post it here.
Well i want to flash a custom rom, but my first attempt went not good for me. I've lost my imei and panicked, anyway by flashing stock sony rom i recovered it.
Now i unlocked my bootloader again (it was locked again after i flashed my stock firmware back), rooted my phone, and learned that nandroid app can make a full backup, and even i screw things up (except hard bricking i guess), that backup will save me. So i downloaded it made a full back up, but it says "back up type: clockwork or TWRP,"
And i heard that TWRP is not for Xperia Z1. Thats why i decided to not install it,
Then i installed clockwork rom manager, it said "this app requires clocwork recovery", but i couldnt find a appropriate version of clockwork recovery, the ones i found on play store were for android 4.0.4, and mine is 4.4.4
You guys probably understand that i know almost nothing about this stuff, (i have only got what i read form forums), so what should i do, which version of clockwork should i install or is there any other supported apps that i can use my nandroid backup?
Soka, i checked your link but couldnt be sure about which link should i click.
And another question, do i still need titanium backup while i have nandroid?
Thanks in advance
My device is C6903
4.4.4
14.4.A.0.157

CWM Recovery
There two methods:
1. Unlock your bootloader and flash a custom kernel (Bootloader Unlock is required for flashing custom roms which are not stock based; for example cyanogenmod)
-> with a custom kernel you have cwm and often twrp also.
2. check this out: http://forum.xda-developers.com/xperia-z1/development/newroot-z1-t2807092
maybe you have to flash .108 kernel to use newroot, after rooting you can flash the actually kernel from your firmware....
---------- Post added at 07:27 PM ---------- Previous post was at 07:23 PM ----------
Özgün Özerk said:
Hello, i'm newbie here, trying to learn some stuff, i searched the forum but i couldn't find it, i think this page is most appropriate to post it here.
Well i want to flash a custom rom, but my first attempt went not good for me. I've lost my imei and panicked, anyway by flashing stock sony rom i recovered it.
Now i unlocked my bootloader again (it was locked again after i flashed my stock firmware back), rooted my phone, and learned that nandroid app can make a full backup, and even i screw things up (except hard bricking i guess), that backup will save me. So i downloaded it made a full back up, but it says "back up type: clockwork or TWRP,"
And i heard that TWRP is not for Xperia Z1. Thats why i decided to not install it,
Then i installed clockwork rom manager, it said "this app requires clocwork recovery", but i couldnt find a appropriate version of clockwork recovery, the ones i found on play store were for android 4.0.4, and mine is 4.4.4
You guys probably understand that i know almost nothing about this stuff, (i have only got what i read form forums), so what should i do, which version of clockwork should i install or is there any other supported apps that i can use my nandroid backup?
Soka, i checked your link but couldnt be sure about which link should i click.
And another question, do i still need titanium backup while i have nandroid?
Thanks in advance
My device is C6903
4.4.4
14.4.A.0.157
Click to expand...
Click to collapse
you can install twrp on z1 as well: http://forum.xda-developers.com/showthread.php?t=2261606
for cwm check my other post in this thread
hope this will help

Thanks, ive already unlocked my bootloader and rooted my phone as a mentioned above, just needed to know if i can use TWRP and CWM, got my answer thanks, both will work fine with Nandroid backup right? Should i prefer one over another? Cause i dont want any problems

Özgün Özerk said:
Thanks, ive already unlocked my bootloader and rooted my phone as a mentioned above, just needed to know if i can use TWRP and CWM, got my answer thanks, both will work fine with Nandroid backup right? Should i prefer one over another? Cause i dont want any problems
Click to expand...
Click to collapse
Hi there bro...
In the Link ...
Check this out ...
http://prntscr.com/4ow7hp ... download the one the red arrow is pointing at. Unzip and run BAT file. When Prompted onscreen connect device to PC.
This will install recoveries and an app called NDR Utils. With this app you can choose the primary recovery of your choice.
I prefer using Philz...(CWM) based. Important rule i've always followed make backups ( Nandroid).

[Q] [Help] Changing custom ROM from eXistenZ Ultimate to another?

Hi, I rooted my Xperia z around 5 months ago and completely jumped straight into installing a custom ROM and not really done much after that and pretty much forgot everything I knew about rooting, ROM and kernels etc. - The ROM I currently have installed is eXistenZ 3.0.0 with build .283. i also have NDR Utils installed as my recovery option(?) - The installer i used was AROMA if that also helps with my problem. I can't even remember if i unlocked my bootloader or not, if there's a way to find out if it's locked/unlocked then i would be more than happy to try it
okaay so my problem is that I would like to change to a new custom ROM from the current ROM I have, I am aware of all the risks / dangers such as data loss etc. If you could post a tutorial for me to follow, i would be more than grateful. I hope you understand my problem Thanks for reading.
-Cynicaal :cyclops:

Cynicaal said:
Hi, I rooted my Xperia z around 5 months ago and completely jumped straight into installing a custom ROM and not really done much after that and pretty much forgot everything I knew about rooting, ROM and kernels etc. - The ROM I currently have installed is eXistenZ 3.0.0 with build .283. i also have NDR Utils installed as my recovery option(?) - The installer i used was AROMA if that also helps with my problem. I can't even remember if i unlocked my bootloader or not, if there's a way to find out if it's locked/unlocked then i would be more than happy to try it
okaay so my problem is that I would like to change to a new custom ROM from the current ROM I have, I am aware of all the risks / dangers such as data loss etc. If you could post a tutorial for me to follow, i would be more than grateful. I hope you understand my problem Thanks for reading.
-Cynicaal :cyclops:
Click to expand...
Click to collapse
This is from official Sony website
Please note! It will only be possible to unlock the boot loader for certain releases. You can check if it is possible to unlock the boot loader of your device in the service menu by following the steps below:
In your device, open the dialler and enter *#*#7378423#*#* to access the service menu.
Tap Service info > Configuration > Rooting Status. If Bootloader unlock allowed says Yes, then you can continue with the next step. If it says No, or if the status is missing, your device cannot be unlocked.
To change a rom, you would need
an unlocked bootloader or a ROM that supports locked bootloader
A custom recovery
a ROM zip.
Head to the ROM thread you want to flash and read the instructions carefully.
I hope this is enough, however, if you need any further assistance, make sure you quote me for an answer.
Good Luck

Good start ?

Hi all, glad to find this
I have ..., guess what ? a RAZR i (Ok, it's a friend's one) that I repaired changing the mad battery after factory resets didn't do anything. Then found OTA was available, applied and the RAZR i was 4.1.2 IIRC and the new battery went OK. My mistake, another OTA went soon, which I applied too, making the RAZR i a 4.4.2 kitkat piece of crap (no more write access to sdcard, this is well known ... by the ones aware , know I'm one).
Then I thought I could make the phone free and search the web for days to try to understand, found a french forum which said I can't do anything without unlocking the bootloader, what I did.
They directed me there to remove the boot-logo-warning but that's a razr hd thread and nothing worked for me. I can't remember where I read I should have CWM to do this, but as the french guy said he rather like twrp I didn't do anything at the moment, only failed to flash some logo from fastboot with various errors....
Well, I'm there, and it's cool because I hope this is the good place to have answers to questions that are still in my mind for years, and 2/3 new ones... fortunately they'll overlap and self-resolve once I get one. I'm not at all skilled in android, I only flashed a phone in 2010 and that's why I still have android SKD in my ubuntu (I also have a xp box, but I couldn't do anything for my old Acer LiquidMT). As you see, I'm a vintage things amateur (... okay, I'm vintage too).
Now the scene is built, please let me dare ask what still puzzles me :
1) For the Razr i 4.4.2 (french from sfr-vodafone kia20.74 now used with another carrier) do I have to search a specifically dedicated recovery ? Parsing this RAZR i Q&A, I found twrp seems to the preferred recovery, but I'd rather like to get confirmation from skilled ones, and also for version.
2) And please tell me if I'm wrong thinking the [RECOVERY] Unofficial TWRP 3.0.2-0 thread aim is to bring support to the RAZR i which is not supported by official teamw.in ? (BTW, @Hazou, the 1st link in the thread - DataMedia - is dead)
3) Assumed I have to go the TWRP way and I only have currently the stock recovery, do I guess right the only way is download img.zip and extract then do
Code:
./fastboot flash recovery recovery.img
, then only after that the phone can be rooted ?
4) You see I'm puzzled here because I still don't have understood the logical path: is this one the good ? unlock boot loader -> fastboot flash reco -> is the device rooted at this point ? If not, install su from recovery option "install zip from sdcard", then it's done and I get a so called "rooted stock ROM" ? Then only I can figure installing a custom ROM if exists for the RAZR i ?
5) And I should always flash a custom ROM based on the same 4.4.2 android release as my current stock one AND disable OTA updates ?
I read so many threads with guys having issues with hard-bricked RAZR i and all are about ICS and JB, so I wander the only custom are for ICS or JB, and still don't understand why they want to revert back.
Thanks for advices.

1stStep said:
Hi all, glad to find this
I have ..., guess what ? a RAZR i (Ok, it's a friend's one) that I repaired changing the mad battery after factory resets didn't do anything. Then found OTA was available, applied and the RAZR i was 4.1.2 IIRC and the new battery went OK. My mistake, another OTA went soon, which I applied too, making the RAZR i a 4.4.2 kitkat piece of crap (no more write access to sdcard, this is well known ... by the ones aware , know I'm one).
Then I thought I could make the phone free and search the web for days to try to understand, found a french forum which said I can't do anything without unlocking the bootloader, what I did.
They directed me there to remove the boot-logo-warning but that's a razr hd thread and nothing worked for me. I can't remember where I read I should have CWM to do this, but as the french guy said he rather like twrp I didn't do anything at the moment, only failed to flash some logo from fastboot with various errors....
Well, I'm there, and it's cool because I hope this is the good place to have answers to questions that are still in my mind for years, and 2/3 new ones... fortunately they'll overlap and self-resolve once I get one. I'm not at all skilled in android, I only flashed a phone in 2010 and that's why I still have android SKD in my ubuntu (I also have a xp box, but I couldn't do anything for my old Acer LiquidMT). As you see, I'm a vintage things amateur (... okay, I'm vintage too).
Now the scene is built, please let me dare ask what still puzzles me :
1) For the Razr i 4.4.2 (french from sfr-vodafone kia20.74 now used with another carrier) do I have to search a specifically dedicated recovery ? Parsing this RAZR i Q&A, I found twrp seems to the preferred recovery, but I'd rather like to get confirmation from skilled ones, and also for version.
2) And please tell me if I'm wrong thinking the [RECOVERY] Unofficial TWRP 3.0.2-0 thread aim is to bring support to the RAZR i which is not supported by official teamw.in ? (BTW, @Hazou, the 1st link in the thread - DataMedia - is dead)
3) Assumed I have to go the TWRP way and I only have currently the stock recovery, do I guess right the only way is download img.zip and extract then do
Code:
./fastboot flash recovery recovery.img
, then only after that the phone can be rooted ?
4) You see I'm puzzled here because I still don't have understood the logical path: is this one the good ? unlock boot loader -> fastboot flash reco -> is the device rooted at this point ? If not, install su from recovery option "install zip from sdcard", then it's done and I get a so called "rooted stock ROM" ? Then only I can figure installing a custom ROM if exists for the RAZR i ?
5) And I should always flash a custom ROM based on the same 4.4.2 android release as my current stock one AND disable OTA updates ?
I read so many threads with guys having issues with hard-bricked RAZR i and all are about ICS and JB, so I wander the only custom are for ICS or JB, and still don't understand why they want to revert back.
Thanks for advices.
Click to expand...
Click to collapse
Hey 1stStep,
A lot off assumptions and questions. And most of them are right.
1. Afaik there are 2 recoveries for the RAZR I. Stock and my build TWRP 3.0.2-0 unofficial. (Thanks for the heads up about the link)
2. Answered in 1.
3. Yep. If your bootloader is unlocked it gives u the function to flash non-stock firmware to the phone. Stock firmware are signed to prevent normal users flashing wrong firmware. Firmware consist of a couple of images. Those images contain data for the partition, just like in your PC. Every image does something else. Most known are boot, data, system, recovery and cache. There are many more. Some needed, some unnecessary.
To answer your question: when u have flashed the TWRP recovery u override the stock one. The TWRP can flash zip files and images to the most known device partitions. From here on u can flash a superuser zip(gives root access on the current ROM/system). Make sure u have the right superuser zip. There are many.
4.
Path to root on stock:
Unlock bootloader->install custom recovery (TWRP)->install superuser zip->reboot and test root on device
Path to custom ROM:
Unlock bootloader->install custom recovery (TWRP)->install ROM zip and extra's if needed like (Gapps(needed for Google playstore and more))->reboot and play with your new ROM.
Off course if u already have the bootloader unlocked and installed a custom recovery, u can skip those.
In the recovery u can also make backups, called nandroid backup. Read up on them and everything u wanna do.
5. The only thing u never want/should do is flashing Android 4.0.4 stock firmware without prior modifications. This is because from 4.0.4 to 4.1.2 there was a change in bootloader (the thing u unlock). If u go back it corrupt a part of the firmware which is difficult to overcome or even impossible without some factory stuff. Everything above 4.1.2 is save. And can always be flashed. The latest stock is 4.4.2 (KIA 20.74) and latest available custom ROM is 4.4.4 (CM11 or soon Lineage 11).
Good luck!

Thanks so mush great dev to spend time and even surely repeat yourself (hope you're not under stress) for a newb.
In your answer for path to custom ROM you say "Unlock bootloader->install custom recovery (TWRP)->install ROM zip and extra's if needed like".
Do I have to understand custom ROMs are yet rooted (OOTB), or root yet made on stock will survive flashing the custom (I though flashing a custom was some kind of infant clear brain graft?
BTW, is it general good advice to test recovery before flashing? I found this in Moto Play unofficial recovery 3.0.2-r5 from Vache:
Code:
fastboot boot recovery.img
?
Thanks again

1stStep said:
Thanks so mush great dev to spend time and even surely repeat yourself (hope you're not under stress) for a newb.
Click to expand...
Click to collapse
Not at all , just replying if I have some time.
1stStep said:
In your answer for path to custom ROM you say "Unlock bootloader->install custom recovery (TWRP)->install ROM zip and extra's if needed like".
Do I have to understand custom ROMs are yet rooted (OOTB), or root yet made on stock will survive flashing the custom (I though flashing a custom was some kind of infant clear brain graft?
BTW, is it general good advice to test recovery before flashing? I found this in Moto Play unofficial recovery 3.0.2-r5 from Vache:
Code:
fastboot boot recovery.img
?
Thanks again
Click to expand...
Click to collapse
- Most custom roms are prerooted.
- Cyanogenmod/LineageOS are prerooted
- Root installed by a zip will not survive any system flashing (rom flashing)
- Any modification to your system partition will not survive and system flashing (rom flashing), though 1 exception:
- installed gapps package (google apps/play store etc.) will survive system flashing on cyanogenmod based roms. But only when updating the rom to a newer version on the same android version. So:
CM11 version 1 to CM11 version 2. (because of a special script in the install zip)
Pre testing a boot or recovery image is blocked on our bootloader. So u can't do it. It's a shame they did it. Working on any boot or recovery changes is a pain in the spoken ass.
If u flash the recovery with:
Code:
fastboot flash recovery recovery.img
there is nothing to be afraid off. The TWRP 3.0.2-0 recovery is well tested on this device.

Thank you again man for all detailed answer.
You're right, it's a shame all these locked things in our phones. I'm sure the guys that agree (our security, blah blah) with these ways to do won't be so happy the day their computers will be locked the same way.
bye bye Hazou.
[Edit] .... hmmm, how long does it take to flash? Yet a 1/4h elapsed and razr still says "Flashing recovery..."
Please, what is the md5 of the image (not the zip, this you give us)? Thanks
[Edit] : Downloaded twice and get md5sum 60dff26f3ee5e9338ee4a6f8cf7df098
but still same forever Flashing recovery ...
[Edit] : I've been puzzled for days being stuck in endless "Flashing recovery ..."
In the ended I decided, after saying 1 hour waiting a hypothetical "success/congrats message", NOT QUITTING the current fastboot screen, to select the recovery option in this very fastboot menu (on a Razr i : Vol- to highlight recovery item, then Vol+ to select) and bang I was in TWRP menu. What to do next once in, it is another story.