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[Q] Desire S, Rooted, S-On, Cant flash new custom ROM

Hey Guys
First time poster here and not massively technical at all so be gentle with me
Ok so over the weekend I decided I wanted to see what all the fuss was about with these custom ROM's that you can download. So I did some research and decided to give it a go. Please bear with me dudes. So what I did was as follows:
1) Unlocked the bootloader following HTCdev.com guide. Success
2) Rooted the phone, now have super user and can grant SU permissions to apps. Success
3) Installed ROM Manager, latest version. Success
4) Attempted to Flash clockworkmod to recovery using ROM Manager. Stated success in the app.
5) In ROM Manager I attempted to make a backup of my stock rom, asked me to enter a backup name and click OK, device reboots and I see a red exclamation mark when it tried to reboot into recovery, suggesting that step 4 was actually a failure.
6)Downloaded latest clockworkmod image file from the clockworkmod site and using a tool called android flasher (I think) I was able to flash the recovery image to the recovery partition. Phone reboots and boots into recovery and boom I have the clockworkmod recovery available to me.
7) Immediately took a backup of my stock rom so can convert back if things go pear shaped. Success.
8) I downloaded 2 custom rom's, Cyanogenmod latest 7.1.0 build and MIUI custom rom, both for Desire S. Success
9) Put both rom's onto my 8GB sd card as instructed by a guide I was following and booted into clockworkmod and wiped cache, data and system. Success
10) In clockworkmod selected install zip from SD card, found the Cyanogen zip and selected it, it proceeds to install. Reports success.
11) Reboot phone and it hangs on the HTC logo screen, nothing doing. Failure.
12) I have to boot back into CWM and restore my backup which is a success.
So what I end up with is my stock rom with an unlocked bootloader, rooted as I have superuser app and can grant SU permissions to ROM Manager and titanium backup. But I don't seem to be able to get a custom rom on there. I have tried formatting sd card, putting a new rom on and then taking battery out for 15 mins but again nothing doing, everything I try I just get a hanging HTC logo after reboot and again I have to restore my backup that I made to get a working phone again.
Here are some details from the bootloader:
**** UNLOCKED ****
SAGA PVT SHIP S-ON RL
HBOOT - 2.00.0002
RADIO - 3822.10.08.04_M
eMMC-boot
Aug 22 2011, 15:22:13
Sorry for the mahoooooossive post guys but its really bugging me that I cant get a custom rom on there, stock rom rooted just wasn't what I was looking for.
Really hope you guys can give some help/advice
Stewie

All yours steps seems fine to me.
The first time you flash a custom rom, it could takes MINUTES before boot (Once I waited 10 min with a rom).
How long did u wait when the HTC logo appeared?
Have you tried to S-OFF your Desire S?
It could be one of the reason why you can't flash properly.
Here all the guides (maybe you already know everything):
http://forum.xda-developers.com/showthread.php?t=1186401
EDIT:
As I suspected, it does stated it clearly in the link I gave you:
FAQs:
1. What's S-OFF and S-ON?
- If your phone is S-ON, you won't be able to root or flash custom ROMs to your phone. S-OFF let's you to have full control of your phone.
(NOTE: S-OFF is not ROOT, S-OFF your device does not mean that your device is Rooted. They are totally two different things.)

yukinok25, dude thanks for that, I was kinda thinking that it may have something to do with the s-on / s-off thing.
I'll have a butchers at trying to s-off the device, but I thought it was supposed to be a pretty tricky procedure with the version of HBoot that I have on my device, i.e 2.00.0002. So I was hoping to avoide the s-off process but if I gotta do it then I gotta do it, just hope it all goes ok.
Again thanks for the link man, good to get some help as im a bit of a rookie at this sort of stuff ;-)
Cheers
Stewie

Anytime mate.
Just because you are new to XDA: you can use the thanks button next time...

Not sure if this is still relevant, but there is a simple guide on the Dev forum on how to S-OFF the new HBOOT:
http://forum.xda-developers.com/showthread.php?t=1525100
Also, the recommended custom recovery is 4EXT, which is based on Clockwork but more advanced. There is even a touch version now:
http://forum.xda-developers.com/showthread.php?t=1377745

[Q] Stuck at CyanogenMod boot screen. Help pls!

Hi. I'm new to HTC Sensation XE. Yesterday I just decided to root my Sensation XE phone so I went to htcdev.com to unlock bootloader.
Everythings went well, I managed to install Clockwork Recovery to my phone and able to install Superuser.
Bad things happened when I try to install CyanogenMod 9 through Clockwork Recovery. I put the rom into SD card, boot into Clockwork and then wipe data/factory reset plus wipe chache partition. Then install ZIP from SD card.
After "install complete" i reboot my phone and now I see CyanogenMod logo looping and stuck there.
I still can get into Clockwork and try install other rom but the Cyanogen logo also comes back everytime and stuck there.
I just found out that I have to do S-Off ?? I have no idea what to do next.
My previous phone was Nexus S. I installed many custom roms on that phone without any problem. As far as I know if I can get into Clockwork Recovery, my phone has been rooted, right? So
What is S-Off?
Why I have to flash firmware??
ROM for Sensation compatible with Sensation XE?
I am not familiar with AROMA installer, is this the problem I can't install ROM successfully?
Now my phone in HBOOT says:
***UNLOCKED***
PYRAMID PVT SHIP S-ON RL
HBOOT-1.27.0000
eMMC-boot
Jan 13 2012, 17:33:34
Please help me

First, you should check the guide on how to flash roms s-on or something. It says you have to push the boot.img in adb, i think.
Sent from my Sensation using xda premium

get the boot.img from the cm9 rom zip file
copy it to the adb/fastboot folder in your pc
connect the phone in bootloader to PC (phone should read fastboot usb after this )
now open command window in the adb folder and type this
fastboot flash boot boot.img
once it got success
type
fastboot reboot
your phone should boot fine now

ganeshp said:
get the boot.img from the cm9 rom zip file
copy it to the adb/fastboot folder in your pc
connect the phone in bootloader to PC (phone should read fastboot usb after this )
now open command window in the adb folder and type this
fastboot flash boot boot.img
once it got success
type
fastboot reboot
your phone should boot fine now
Click to expand...
Click to collapse
OK I'm gonna do that right now! Will post update later. Thank you sooo much :good:

putthia4i said:
I just found out that I have to do S-Off ?? I have no idea what to do next.
My previous phone was Nexus S. I installed many custom roms on that phone without any problem. As far as I know if I can get into Clockwork Recovery, my phone has been rooted, right? So
What is S-Off?
Why I have to flash firmware??
ROM for Sensation compatible with Sensation XE?
I am not familiar with AROMA installer, is this the problem I can't install ROM successfully?
Now my phone in HBOOT says:
***UNLOCKED***
PYRAMID PVT SHIP S-ON RL
HBOOT-1.27.0000
eMMC-boot
Jan 13 2012, 17:33:34
Please help me
Click to expand...
Click to collapse
SOFF: is security off ..once you got this off ..you can change any partition ..like you can install a custom recovery like cwm..over stock recovery ..and custom roms too
but ..HTC-DEV unlock ..is a alternative provided by the HTC ppl ..where when you do unlock ... recovary partition and partitions to make a custom rom work ..got unlocked ..thus this way you can flash cwm and thus custom roms ..
firmware:
to explain that ..think like this ..the complete phone is
hardware + firmware(radio +hboot/bootloader + some others ) + recovery (stock/custom) + ROM (system +data + boot)
now to have a ICS rom ..you need to have ICS firmware ..thus ICS radio (to have good signal) ..and ICS compatible bootloader to have ROM up and running
(remember if you have HTC-Dev unlocked bootloader you cant change the radio and hboot/bootloader)
as you are on ICS priror to doing HTC-dev unlock bootloader ..you are fine now ..as you already got a ICS radio (starts with 11.2x ..in settings->about phone->more->software information->baseband) ..also the hboot/bootloader 1.27.xxx is of ICS one ...
so you are fine with installing any custom roms ...
now there is a little headache when installing custom roms ..via custom recovery in case of HTC-dev unlocked case
some how when you flash a rom ...via cwm..every thing gets flashed except the boot.img which is the primary component to get the phone booting ...so you need to flash the boot.img separately ...that i explained earlier
there is a good recovery which can avoid the extra pain too ..that is 4EXT and the feature is smartflash
to understand the functioning of this recovery
have a good read of this thread ...its for you

ganeshp said:
SOFF: is security off ..once you got this off ..you can change any partition ..like you can install a custom recovery like cwm..over stock recovery ..and custom roms too
but ..HTC-DEV unlock ..is a alternative provided by the HTC ppl ..where when you do unlock ... recovary partition and partitions to make a custom rom work ..got unlocked ..thus this way you can flash cwm and thus custom roms ..
firmware:
to explain that ..think like this ..the complete phone is
hardware + firmware(radio +hboot/bootloader + some others ) + recovery (stock/custom) + ROM (system +data + boot)
now to have a ICS rom ..you need to have ICS firmware ..thus ICS radio (to have good signal) ..and ICS compatible bootloader to have ROM up and running
(remember if you have HTC-Dev unlocked bootloader you cant change the radio and hboot/bootloader)
as you are on ICS priror to doing HTC-dev unlock bootloader ..you are fine now ..as you already got a ICS radio (starts with 11.2x ..in settings->about phone->more->software information->baseband) ..also the hboot/bootloader 1.27.xxx is of ICS one ...
so you are fine with installing any custom roms ...
now there is a little headache when installing custom roms ..via custom recovery in case of HTC-dev unlocked case
some how when you flash a rom ...via cwm..every thing gets flashed except the boot.img which is the primary component to get the phone booting ...so you need to flash the boot.img separately ...that i explained earlier
there is a good recovery which can avoid the extra pain too ..that is 4EXT and the feature is smartflash
to understand the functioning of this recovery
have a good read of this thread ...its for you
Click to expand...
Click to collapse
Thank you. That's explain a lot. Now I can boot into Cyanogen and everything is fine now. So one last question, Am I have to push boot.img via fastboot everytime I install a new custom rom? If so, what to do when dealing with rom with AROMA installer?
I tried roms with AROMA installer and the installation ends at "SuperWipe". Nothing seems to install to my phone.

putthia4i said:
Thank you. That's explain a lot. Now I can boot into Cyanogen and everything is fine now. So one last question, Am I have to push boot.img via fastboot everytime I install a new custom rom? If so, what to do when dealing with rom with AROMA installer?
I tried roms with AROMA installer and the installation ends at "SuperWipe". Nothing seems to install to my phone.
Click to expand...
Click to collapse
yes as long as you have cwm recovery ..you need to do that ..for every custom rom
and
thats why im saying its best to have 4EXT recovery ..as most of roms are 4EXT recovery compatible ..and what more its base is CWM itself ..so what ever backups you made via CWM can be used in 4EXT recovery ..too (and also its touch recovery )
for 4EXT ..recovery ..check the above guide step #2 for installing the 4EXT recovery
step #3 ..which has an amazing feature ..which will be quite useful to you ..(smart flash)
step #5 ..which makes the smartflash permanent

ganeshp said:
yes as long as you have cwm recovery ..you need to do that ..for every custom rom
and
thats why im saying its best to have 4EXT recovery ..as most of roms are 4EXT recovery compatible ..and what more its base is CWM itself ..so what ever backups you made via CWM can be used in 4EXT recovery ..too (and also its touch recovery )
for 4EXT ..recovery ..check the above guide step #2 for installing the 4EXT recovery
step #3 ..which has an amazing feature ..which will be quite useful to you ..(smart flash)
step #5 ..which makes the smartflash permanent
Click to expand...
Click to collapse
Thanks. Got it. Now switching to 4EXT. :laugh:

ganeshp said:
get the boot.img from the cm9 rom zip file
copy it to the adb/fastboot folder in your pc
connect the phone in bootloader to PC (phone should read fastboot usb after this )
now open command window in the adb folder and type this
fastboot flash boot boot.img
once it got success
type
fastboot reboot
your phone should boot fine now
Click to expand...
Click to collapse
OH SWEET GOD, you have saved my life ! :laugh: I thought my phone would not boot anymore. THANK YOU VERY MUCH !!! :good:

Same issue :/
pohlondrej said:
OH SWEET GOD, you have saved my life ! :laugh: I thought my phone would not boot anymore. THANK YOU VERY MUCH !!! :good:
Click to expand...
Click to collapse
Hey guys, I have tried to install Cyanogen 9 and I'm having the same issue described here - I get stuck at the Cyanogen 9 screen.
Can I get some help? I have tried to reinstall the boot loader as described but that didn't work.
I have also tried to reinstall the rom and that didn't work either :/
I'm really worried and would appreciate any help.
My phone is also a sensation XE I have rooted it and my recovery works with the 4EXT.
Thanks!

andyluv said:
Hey guys, I have tried to install Cyanogen 9 and I'm having the same issue described here - I get stuck at the Cyanogen 9 screen.
Can I get some help? I have tried to reinstall the boot loader as described but that didn't work.
I have also tried to reinstall the rom and that didn't work either :/
I'm really worried and would appreciate any help.
My phone is also a sensation XE I have rooted it and my recovery works with the 4EXT.
Thanks!
Click to expand...
Click to collapse
Post the complete bootloader details here
Sent from my HTC Sensation 4G using xda premium

ganeshp said:
Post the complete bootloader details here
Sent from my HTC Sensation 4G using xda premium
Click to expand...
Click to collapse
NEVERMIND! I got it working! the wipe all data (but SD Card) and dalvik cache made it work for me!
LOVE you guys
Thank you so much! :victory:

ganeshp said:
get the boot.img from the cm9 rom zip file
copy it to the adb/fastboot folder in your pc
connect the phone in bootloader to PC (phone should read fastboot usb after this )
now open command window in the adb folder and type this
fastboot flash boot boot.img
once it got success
type
fastboot reboot
your phone should boot fine now
Click to expand...
Click to collapse
I just want to say THANK YOU!!!! I was not able to get s-off but you help me a lot. It extra step to do, but it works!!!

Restore device using fastboot only

Hello to all,
For some reason my HTC Sensation won't boot - it keeps on rebooting on the white htc screen.
It started doing this 1-2 weeks ago. Yesterday I managed to get inside the ClockworkMod Recovery somehow from HBOOT, and restored an old backup. Then I installed a newer radio and [ROM] Android Revolution HD 6.7.2 (the page recommended updating the radio). I also flashed the 4EXT Touch recovery, as it was required by this ROM, so I changed from Clockwork to 4EXT. The device worked for 1-2 hours, and then after one restart, it wouldn't boot again. This time I can't access anything but HBOOT and FASTBOOT.
Of course ADB doesn't work as I can't boot the device.
So the question is - what shall I update via fastboot "fastboot update update.zip" so that I restore my device? Or what file shall I put on the SD Card so that HBOOT can recover it (I have access to other devices, so I can place something on the SD card)?
I've been trying to flash various ROM's and RUU's but all of them give an error.
The configuration inside HBOOT says the following:
-Revolutionary-
PYRAMID PVT SHIP S-OFF RL
HBOOT-1.27.1100
RADIO-11.24A.3504.31_M
OpenADSP-v02.6.0.2226.00.0104
eMMC-boot
Jan 12 2012,17:33:34
I also tried flashing a few recoveries via fastboot (clockworkmod recovery.img and 4ext recovery.img), but could get inside them :/
Let me know what else could I do.
Thanks for the support!

I just managed to get to the ClockworkMod recovery and installed a new ROM - OpenSensation. It worked during the first boot, but then when I rebooted the phone - the same thing happens - it keeps on rebooting on the htc white screen.
Of course I can no longer go to the ClockworkMod recovery.
I also notice that when going back and fourth between HBOOT and FASTBOOT menus, at the top the version for RADIO appears and disappears.
I am not sure if all this is a hardware or software problem, but it is strange that from time to time I manage to get to a recovery and install a ROM which works for a while and then sends me back to this rebooting loop.
Any ideas?
Thanks!

Might be a hardware failure but.. First try ruu and restore to complete stock. Most of the times this fixes the issue..
For finding and flashing a ruu.. Look for ruu info guide by kgs1992 in sensation general section
Sent from my HTC Sensation 4G using xda premium

Thanks for the help. I managed to install successfully the following RUU:
RUU_Pyramid_HTC_Europe_1.50.401.1_Radio_10.56.9035.00U_10.14.9035.01_M_release_223042_signed
but it didn't work... it installed successfully, but the phone keeps on restarting on the white htc screen.
I figured that might be because of the firmware installed (I was on Android 4.0.x), so maybe this RUU is older.
I am downloading right now:
RUU_PYRAMID_ICS_HTC_Europe_3.32.401.5_R_Radio_11.69.3504.00U_11.22.3504.07_M_release_252064_signed.exe , which definitely must be Android 4.0.x so I hope it works.
Thanks for the help and thanks to kgs1992

Ruu is complete rom.. It has everything In it.. When you run ruu you shouldn't consider the firmware, recovery etc etc.. It has everything built in
So when you flashed the gb ruu.. It flash stock recovery, stock gb firmware and stock rom
So when you flashed gb ruu it has turned to complete gb rom.. Anyways less hope that the ICS ruu works fine
Sent from my HTC Sensation 4G using xda premium

Somehow I thought that the firmware is separate, although I wasn't sure.
Anyway - the fact is that after a successful RUU update, the phone keeps on rebooting and couldn't boot even once. I hope the next RUU fixes it.
thanks,
Anton

Still doesn't work after trying a second RUU: RUU_PYRAMID_ICS_HTC_Europe_3.33.401.6_Radio_11.76A.3504.00U_11.24A.3504.31_M_release_266171_signed.exe
The bootloader says:
*** LOCKED ***
PYRAMID PVT SHIP S-OFF RL
HBOOT-1.27.0000
RADIO-11.24A.3504.31_M
OpenADSP-v05.6.0.2226.00.0418
eMMC-boot
Jan 13 2012,17:33:34
Any ideas?
thanks,
Anton

try a AOSP ROM/CM9/CM10 lot of people had these kind of issues and they can boot only to a non sense roms ..may be you could boot fine on non-sense roms too

How would I flash CM9 CM10 or any AOSP, when I have access only to "fastboot". So far I could only flash those RUU-s from a Windows machine, as I can't get to any recovery.
Would it work if I try "fastboot update cm9.zip" or something similar?
Thanks,
Anton

nonsens3 said:
How would I flash CM9 CM10 or any AOSP, when I have access only to "fastboot". So far I could only flash those RUU-s from a Windows machine, as I can't get to any recovery.
Would it work if I try "fastboot update cm9.zip" or something similar?
Thanks,
Anton
Click to expand...
Click to collapse
Fastboot update command won't work
As you are soff.. You can flash jbhboot or 3.33 universal firmware with every thing removed except hboot_xxxx.nb0 file.. And unlock the hboot first
Then flash a recovery (you can avoid hboot flash and try a PG58IMG.zip file of recovery) from fastboot
Then from.. Recovery flash the cm9 or any AOSP rom
If you can't boot to recovery even after flashing the recovery fine.. Then try this command
fastboot boot recovery.img
(it boots into recovery temporarily.
From there you will flash a rom)
Sent from my HTC Sensation 4G using xda premium

nonsens3 said:
How would I flash CM9 CM10 or any AOSP, when I have access only to "fastboot". So far I could only flash those RUU-s from a Windows machine, as I can't get to any recovery.
Would it work if I try "fastboot update cm9.zip" or something similar?
Thanks,
Anton
Click to expand...
Click to collapse
You can try using Fastboot Commnder
Instructions:
-download tool
-unpack zip and click on .exe application (is a stand alone app, so you have to click and confirm installation, that's all!)
-open tool
-put DHD in "Fastboot Mode"
-plug it to your pc usb
-Wait for "print of device succesfull"--(if fails, check your sdk driver)
-here you go to "misc"
-select: erase partitions (system,cache,userdata,boot) Don't select recovery
-click on "Erase chosen partition"
-Done
You can use this tool to flash a new ROM or even to flash a recovery.img
Your problems might also come from not flashing the correct recovery.
Make sure you have the latest version. Good luck

[Q] HELP wont boot

i tried to flash [ROM] | 04 Jun 2013 | AOSP | 4.2.2 | JellyFireBeanv2 Summer Edition | StrikeX Updated onto my desire s and now its just stock on the htc booting screen
i need to get this phone working as soon as possible and i dont mind if that means going back to stock
got these details before i started rooting yesterday
SAGA PVT SHIP S-ON RL
HBOOT-2.00.0002
RADIO-3822.10.08.04_M
eMMC-boot
Aug 22 2011,15:22:15
<<<< Identifier Token Start >>>>
250906DC50D151520747FAF59C165CA6
965338ACCDA31327AE1DDED427752287
651FC922F0632A08387B492FB08F903E
61C61A41805EE625536A127B1E709089
3A773759C1726F54E125A46C96F4D7D5
D74FBAB768FEADE626A5B9CC1C72B95B
654C78049E871ECA29656ED91E3FFFDE
807096C2263F86E3620424FC1B601A52
58A45EEDC468BC30832CCFB3DDC4A4D2
A89C50576B7814E419627E6658F6B6DE
DE76E3C897D1413153A92A2302DCAA94
F2BFA661FDFDE40FF603170FF5DDFC75
DF2FE0BB83B20BF5E23D98F4DC9E1C8E
19803C6AF2105B9BEF1B09EE21077CA3
9D0DFE0BBA25B140F2ABEC03A3FBC2BD
C75641FC02117BC8CA6D57697BAD56DA
<<<<< Identifier Token End >>>>>
please help someone

Did you flash the boot.img (from the rom) in fastboot? This is necessary if the phone is htcdev unlocked (and still s-on).

theres a boot image? probably should not have rushed into this haha
teadrinker said:
Did you flash the boot.img (from the rom) in fastboot? This is necessary if the phone is htcdev unlocked (and still s-on).
Click to expand...
Click to collapse
i dont know where it is, haha thanks for replying,
1. do i need to flash it via cwm.
2. where can i find it.
3. the phones currently got the bootloader relocked haha but i should be able to unlock it again as its useless atm, its just been entirely formatted via cwm.

You can find the boot.img in the zip file of the rom (extract it from the rom you're flashing).
No, you have to flash it in fastboot mode. You must have adb and fastboot set up on your pc, reboot the phone into bootloader, and use the command :
fastboot flash boot boot.img
There are guides in the desire s general section that include more exact instructions.

teadrinker said:
You can find the boot.img in the zip file of the rom (extract it from the rom you're flashing).
No, you have to flash it in fastboot mode. You must have adb and fastboot set up on your pc, reboot the phone into bootloader, and use the command :
fastboot flash boot boot.img
There are guides in the desire s general section that include more exact instructions.
Click to expand...
Click to collapse
Thanks so much, yes i am a newbie. i have rooted a tablet and used to flash it like weekly but never had to flash the boot seperately haha
so i unlocked my bootloder again using the unlock bin file from before and the all in one toolkit, done, booted into cwm, wipe cace, wipe data/factory reset, wipe dalvvik, install the rom, gapps and beats.
then pressed power off, rebooted into fastboot ad flashing using a guide (sorry cant post a link but i will say its called [Tutorial] How to flash a new boot.img via Fastboot)
all done the guide worked perfectly, it seemed so easy, its booted into android setup now thanks so much for getting me into the right direction

[Q] Desire S bricked by not downgrading Hboot?

Hi all!
First of all: I know. I am a dumbass for not doing a backup. (and several other things)
Second: Thank you for your time! I really appreciate it- thats why I tried for two days to solve the problem by searching the internet for guides to restore my phone and not stealing your time.
If you just want to help me - skip the first part ("The story"). I just had to write it down, because I am that desperate and hopeless...
The story
Beside my Nexus 5 I wanted a spare phone to go outdoors and have a nice small phone - other than the huuuuuuge Nexus.
My last phones were the HTC Sensation, a Desire GSM and the Wildfire. So I decided to get a Desire S and do what I did to all my phones and tablets yet: root it.
Because I had the dumb idea that rooting a couple of phones makes me an expert I skipped the "reading guides"-part and jumped right to the "beeing an idiot"-part and downloaded the Revoked-tool.
After I got the TWRP-recovery I also skipped the "making a backup"-part and that is where my disaster began....
The problem
I tried to root my phone, but I did not reverse the Hboot. So now my phone IS NOT s-off, but I've got a working recovery installed and I can get into Fastboot and the Bootloader.
But because my partitions are wiped I can neither boot normally nore can I install a custom recovery (because of the "s-on").
My phone has got an O2-branding, so I can't install the normal Android 4.0 RUU. Neither works the O2 RUU. I suppose, because it still is the Android 2.4 - Version ( the name of the file is "RUU_Saga_O2_UK_1.31.206.1_Radio_20.28b.30.0805U_38.03.02.14_M_release_178935_signed.exe") and it does not work with my phone....
Is there any chance to get a working Desire S again?
Thabks for your time....

u have stock recover. and u have (i suppose) an unlocked bootloader.
have u tried flashing the recovery through fastboot command ?
fastboot flash recovery recovery.img
download TWRP or 4EXT touch zip file - then unpack it and copy the recovery.img inside it to fastboot or android-tools folder
open cmd there (preferably with admin rights)
and run that command.
if it is able to flash a custom recovery, then u can try to flash a rom.
u might need to check if u have a sony or hitachi screen panel though (but that should have been before u tried rooting, i think)

Hi rht_sg,
thanks for your answer!
Right. My Bootloader is unlocked.
The problem is the "S-ON" I think.
I've got a recory installed, but I can not intall any custom ROM because of the "S-ON"-Mode.
Here the important things I have foregotten in my first post:
In FASTBOOT my phone says:
"
SAGA PVT SHIP S-ON RL
HBOOT-2.02.0002
RADIO-3831.19.00.110
eMMC-boot
"
...and my recovery is TWRP v2.4.0.0

You can install a custom rom without being s-off, but you have to flash the boot.img (from the rom) manually in fastboot after installing the rom in recovery (fastboot flash boot boot.img).
I would recommend updating your recovery to either twrp 2.7 (from the thread in this forum) or the latest 4ext touch. One reason being that older recoveries fail when trying to flash kit-kat roms (error 7).
To update your recovery while still s-on, use fastboot (fastboot flash recovery recovery.img)

Thanks!
That solved it. - Now I could install a custom ROM again.
Now I follow your advice to flash the latest recovery.