Database Develop

[Q] No OS installed

I had installed CM10 on my optimus 2x but I had a problem with the rom so I tried to flash another rom.
By mistake I wiped data, davlik-cache and everything else. So I don't have a backup. When I try to install another rom through TWRP is says that it failed and afterwards it says No OS installed, Are you sure you want to reboot?
Please I only want to return to the original stock rom and upgrade from that to ICS. I found the guide on how to update to ICS so all I'm asking for is how to get out of this No OS installed trouble.
I appreciate alll effort.

teddycypria said:
I had installed CM10 on my optimus 2x but I had a problem with the rom so I tried to flash another rom.
By mistake I wiped data, davlik-cache and everything else. So I don't have a backup. When I try to install another rom through TWRP is says that it failed and afterwards it says No OS installed, Are you sure you want to reboot?
Please I only want to return to the original stock rom and upgrade from that to ICS. I found the guide on how to update to ICS so all I'm asking for is how to get out of this No OS installed trouble.
I appreciate alll effort.
Click to expand...
Click to collapse
Hi Mate dont panic it´s easy to fix have u try any Nflash procedure yet ?

Try Stefans V28G via nflash:
http://forum.xda-developers.com/showthread.php?t=1986097
Direct link: http://d-h.st/PNj
Installation NVFlash version (under Windows): (internal SD will be wiped, /data partiton can be saved and restored with 2nd generation builds)
download the ROM, unpack it with WinRar, 7Zip or similar to any folder you want
take battery out of phone, press VOL + AND VOL - simulataneously, and while doing this plug the phone via USB to your PC
screen of phone remains black, this is normal, but you should hear a sound that you plugged the device. Probably you have to install APX drivers at this point if you are asked. They are included in the latest NVFlash builds. Tutorial on driver installation: http://www.modaco.com/topic/335416-n...-links-active/
assuming that you already installed APX drivers: run the "flash_windows.bat" file in the folder where you extracted the ROM
follow the instructions
That's already it Usually no complications to be feared. Enjoy!
Click to expand...
Click to collapse

You can connect phone to pc and copy a cm10, don't reboot phone, you must mount mass USB storage. Copy and flash: )
Inviato dal mio LG-P990 con Tapatalk 2

Will try it out
Thanks Domfis and Creison, I will try it out and see what happens. I hope it works :fingers-crossed: out cause I really do not wish to change my phone now that official ICS is out. If I manage to do this I will wait till summer to change my phone. Currently using my old nokia 3310

teddycypria said:
I had installed CM10 on my optimus 2x but I had a problem with the rom so I tried to flash another rom.
By mistake I wiped data, davlik-cache and everything else. So I don't have a backup. When I try to install another rom through TWRP is says that it failed and afterwards it says No OS installed, Are you sure you want to reboot?
Please I only want to return to the original stock rom and upgrade from that to ICS. I found the guide on how to update to ICS so all I'm asking for is how to get out of this No OS installed trouble.
I appreciate alll effort.
Click to expand...
Click to collapse
Please ask all questions in Q&A. Thread moved there.

teddycypria said:
Currently using my old nokia 3310
Click to expand...
Click to collapse
ROFL!!! :laugh:

assistance plz
also getting same message.but when flashing rom says no os want to continue. any help would be great. still have stock rom.

infamous215 said:
also getting same message.but when flashing rom says no os want to continue. any help would be great. still have stock rom.
Click to expand...
Click to collapse
i suppose you're on the old bootloader? then just use AIO Toolkit ->> http://forum.xda-developers.com/showthread.php?t=2020737
Use Option 4, then you'll get the new bootloader and CWM installed. Afterwards just flash a ICS Rom or CM10(ICS BL) via CWM!

error
I have had LG P9920 Rooted phone and its working smoothly( I rooted my phone using cyanogenmod 10.2 and super user cmd ) .yesterday I try to install new kikkat os for my rooted lg phone . and I am download new recovery .img and zip file ,then I mounted twrp recovery .img file in command line in phone (dd-if ….)after mount that .img I restarted my phone and boot up twrp the I wiped data, davlik-cache and everything else. So I don't get a backup. Then system and android data I wiped.it error shown “e: unable to mount sdcard .system and fail to factory reset “…
I cant see internal memory its show 0mb.so I tried to several time wiped data and everything, but finally “TWRP is says that it failed and afterwards it says No OS installed, Are you sure you want to reboot? “
Please anyone who can have same idea above this matter please help me, I appreciate all effort.

mahesh dimuthu said:
I have had LG P9920 Rooted phone and its working smoothly( I rooted my phone using cyanogenmod 10.2 and super user cmd ) .yesterday I try to install new kikkat os for my rooted lg phone . and I am download new recovery .img and zip file ,then I mounted twrp recovery .img file in command line in phone (dd-if ….)after mount that .img I restarted my phone and boot up twrp the I wiped data, davlik-cache and everything else. So I don't get a backup. Then system and android data I wiped.it error shown “e: unable to mount sdcard .system and fail to factory reset “…
I cant see internal memory its show 0mb.so I tried to several time wiped data and everything, but finally “TWRP is says that it failed and afterwards it says No OS installed, Are you sure you want to reboot? “
Please anyone who can have same idea above this matter please help me, I appreciate all effort.
Click to expand...
Click to collapse
Since data is lost anyway, try running AIO toolkit to reflash the bootloader which also fixes recovery and partitions.

[Q] Stuck at CM recovery after accepting newest official software update

Hi, device is rooted, and clockworkmod recovery 6.0.4.5 installed.
ROM is JB, the official update from LG. Today device reported there is an update to the installed firmware.
I rebooted in CM recovery, took a nandroid backup, booted, and accepted to download the official update to my official JB rom. After downloading I was asked to reboot (in order to install), and the phone reboots to the CM recovery.
From there I don't know what to do. I have tried rebooting, but again find myself to the CM recovery. I have tried "reboot to bootloader" and get stuck at the LG boot screen logo with the message "Now Ready!" in tiny white letters on the upper left corner.
I would try "install zip" but I don't know where the downloaded update is (if it even is in an acceptable zip format)
Phone isn't bricked, I guess I can always restore from the recently taken backup, but I really would like to know if there is a way to install this update.
Thank you

http://forum.xda-developers.com/showthread.php?p=50645445
Could you please please please try to search the next time I've seen this question for probably 3-4 times
Sent from my LG-P880 using xda app-developers app

you can't ota over unlocked bl/cwm, you must flash update manually

moneyvirus said:
http://forum.xda-developers.com/showthread.php?p=50645445
Could you please please please try to search the next time I've seen this question for probably 3-4 times
Click to expand...
Click to collapse
You're right, but you know, sometimes you just can't nail the right keywords especially if its not your native language. I searched, but obviously not good enough.
Rudjgaard said:
you can't ota over unlocked bl/cwm, you must flash update manually
Click to expand...
Click to collapse
Sadly, this seems to be the case.. bummer.
Thanks everyone

Not even my nandroid backup can help me get to where I was before? So much for nandroid being the ultimate backup, a "snapshot image" of the device...
So, what if, I use CM recovery to install a custom rom, and then restore from my nandroid backup (being the official JB) ?

Flash with kdz flasher original ROM then flash cwm you can put back your backup. I think the problem starts that the update pushes something in the boot section that is expecting an other (read original) recovery . when you installed cwm it boots up cwm so that's why an nandroid backup doesn't work I think ( to be honest I'm not 100% sure this is correct)
Sent from my LG-P880 using xda app-developers app

I can't even flash cyanogenmod???
I downloaded latest stable build, copied it to sd card, selected it from the CM recovery ("install zip"), installed fine, reboot, still stuck at CM recovery!!!
What gives?

EPa said:
I can't even flash cyanogenmod???
I downloaded latest stable build, copied it to sd card, selected it from the CM recovery ("install zip"), installed fine, reboot, still stuck at CM recovery!!!
What gives?
Click to expand...
Click to collapse
Have you yet followed the advice and installed the KDZ?

Trying to avoid that, as it seems too much work for a phone that was working fine, and stuck to recovery due to some silly boot flag or something.
Saw it as a chance to try cyanogenmod. But it seems having CM recovery and the cyanogenmod rom on the sd card won't cut it! Talk about failure..

EPa said:
Trying to avoid that, as it seems too much work for a phone that was working fine, and stuck to recovery due to some silly boot flag or something.
Saw it as a chance to try cyanogenmod. But it seems having CM recovery and the cyanogenmod rom on the sd card won't cut it! Talk about failure..
Click to expand...
Click to collapse
I don't think you will have a choice. If you created the nandroid backup on your SD card then you aren't going to lose it, so just flash the KDZ, root again and install your backup, or accept the LG update and rebuild all your software again.

Yes, one thing is for sure. I had to install the KDZ to be able to proceed with anything..
It's just funny having a working CWM recovery and a cyanogen rom on the device and after flashing it, still not having a device that boots. A "recovery"/flash tool, should be able to "recover" from such a situation..

EPa said:
Yes, one thing is for sure. I had to install the KDZ to be able to proceed with anything..
It's just funny having a working CWM recovery and a cyanogen rom on the device and after flashing it, still not having a device that boots. A "recovery"/flash tool, should be able to "recover" from such a situation..
Click to expand...
Click to collapse
You can't blame the recovery. It is clearly stated many, many times that you should never attempt an official OTA update with a non-standard (rooted or recovery installed) device. On other devices you could even hard-brick AFAIK, so consider yourself lucky that you only had to reflash a KDZ and start again.

For restoring stock rom use this: http://forum.xda-developers.com/showthread.php?t=2682146 I can confirm it works and it is (very) easy.

Yes that's what I used and I also confirm it works and is very easy.

[Q] Xperia SP C5302 Stuck in boot logo! PLEASE HELP!

I was curious about installing custom roms so i decided to try. I successfully had rooted my phone and unlocked the bootloader and i just needed CWM recovery so that I could install CM11 custom rom. I didn't put the custom rom on my phone because I'd figure I would do it after installing CWM but after flashing CWM, I couldn't even go into my stock rom! I tried everything from formatting the cache to the data, I even have TWRP flashed as well but no luck there. I don't want to mess with my phone anymore because I am quite frankly, scared. So all I want to do is remove CWM and TWRP recovery, and flash my stock rom. Oh, and I tried to flash the stock rom with flashtool, that didn't work either
Thanks for the help!
UPDATE: I DOWNLOAD ALL THE DRIVERS FOR FLASHTOOL AND TRIED INSTALLING MY STOCK ROM THROUGH FLASH BOOT AND IT WORKED! SO FAR SO GOOD.
UPDATE 2: ITS WORKING. ALL I DID WAS LOCK MY BOOTLOADER WITH FLASHTOOL AND FLASHED THE STOCK ROM!

I think you could mount the usb storage from CWM, so you could copy the rom you wanted and install it? You could have saved a lot of hassle loool

[Q] Xperia SP slowing down, what to do?

I felt my Xperia SP was beginning to get really slow lately so I rooted it in order to remove som bloat and move apps to SD card.
Now I wanna upgrade it from 4.3 Jelly Bean to 4.4 KitKat to get some new features and hopefully speed it up some more!
I'm completely new to this and I know next to nothing about flashing and bootload and ROMs and all that fancy stuff so i would like some help. I searched around a bit and in every post I found they said I had to wipe my phone in order to get KitKat. Is there any way to get KitKat and still keep everything on my phone (not wiping it)? And if there isn't, should I then go ahead and start from the beginning with like 5.0 Lollipop or CyanogenMod (whatever that is LOL).
//A noob that would really like some help with his slow phone!

NizzeB said:
I felt my Xperia SP was beginning to get really slow lately so I rooted it in order to remove som bloat and move apps to SD card.
Now I wanna upgrade it from 4.3 Jelly Bean to 4.4 KitKat to get some new features and hopefully speed it up some more!
I'm completely new to this and I know next to nothing about flashing and bootload and ROMs and all that fancy stuff so i would like some help. I searched around a bit and in every post I found they said I had to wipe my phone in order to get KitKat. Is there any way to get KitKat and still keep everything on my phone (not wiping it)? And if there isn't, should I then go ahead and start from the beginning with like 5.0 Lollipop or CyanogenMod (whatever that is LOL).
//A noob that would really like some help with his slow phone!
Click to expand...
Click to collapse
Ok man, First install the cwm or twrp (recovery) on you xperia after makes a backup the data on recovery and search one ROM if you are ubl unlocked bootloader you can install lbl (Locked bootloader) provide that you in stock kernel, and if you are lbl you only install lbl ROMs,
For install lbl
Enter your recovery, select, wipe data/factory reset -wipe cacheand davilk cache, search your ROM internal or external memory,select and install, the same of gaaps.
For ubl
Use your pc, extract the boot img, go in flashtools install drivers fastboot and flashmod and the driver of xperia sp, after go on rain, select flashmod and img, after enter on fastboot mod and flash the kernel, and the rest it same for instalation
Sorry for my bad english

Guizão BR said:
Ok man, First install the cwm or twrp (recovery) on you xperia after makes a backup the data on recovery and search one ROM if you are ubl unlocked bootloader you can install lbl (Locked bootloader) provide that you in stock kernel, and if you are lbl you only install lbl ROMs,
For install lbl
Enter your recovery, select, wipe data/factory reset -wipe cacheand davilk cache, search your ROM internal or external memory,select and install, the same of gaaps.
For ubl
Use your pc, extract the boot img, go in flashtools install drivers fastboot and flashmod and the driver of xperia sp, after go on rain, select flashmod and img, after enter on fastboot mod and flash the kernel, and the rest it same for instalation
Sorry for my bad english
Click to expand...
Click to collapse
Will all my data and such on my phone still be there? Or will doing like you said wipe out everything so I have to start from the beginning?

NizzeB said:
Will all my data and such on my phone still be there? Or will doing like you said wipe out everything so I have to start from the beginning?
Click to expand...
Click to collapse
To install a new rom you need to format the cell, then check if the rom is the same for xperia sp (will usually be as huashan), because if you install a ROM to another phone in your phone you will be all wrong and your cell will not care if you're lbl beauty is so connect the companiom pc and restore, but if ubl will be a bit more complicated if you follow the quete said antesde backup the data, you will not miss anything, but if not make will have to set up and install all over again

Guizão BR said:
To install a new rom you need to format the cell, then check if the rom is the same for xperia sp (will usually be as huashan), because if you install a ROM to another phone in your phone you will be all wrong and your cell will not care if you're lbl beauty is so connect the companiom pc and restore, but if ubl will be a bit more complicated if you follow the quete said antesde backup the data, you will not miss anything, but if not make will have to set up and install all over again
Click to expand...
Click to collapse
Alright I think I got it! Thanks alot mate, I will try it out!

As you are rooted before you wipe any data you can use a an app cammed titanium backup to back up your data, in settings change the backup location to external SD card. After your new ROM install you can reinstall titanium backup and restore your back up of your data.
Sent from my SGP321 using Tapatalk

Problem Flashing Offcial Firmware

Hi, Dear xda members
Last week i soft bricked my Sony Xperia Z c6603
After flashing modified kernel, i lost everything
I couldn't reach recovery even couldn't flash one with fastboot(as my device was not recognized)
I tried flashing offcial firmware through flashtool. It succeeded flashing
But After reboot i had bootloob and the ROM didn't boot
Finally I had a solution to get my phone fixed. Here's what i did:
*Reboot to FlashMode
*In flashtool I flashed TWRP Recovery in FlashMode
Now all custom ROMs are working but when I flash an official and other ROM's based on official, I'm having bootloops
Tried to wait. NO result
Could you help me with it?
P.S the modified kernel was made by this tool http://forum.xda-developers.com/xpe...ot-automatic-repack-stock-kernel-dm-t3301605/
When i softbricked my phone I tried to fix it according to this guide http://forum.xda-developers.com/xpe...rick-sony-xperia-z-c6602-c6603-c6606-t3215134

after i flashed the cm rom, i got the same problem. after flash the stock ROM or official firmware, It keep bootloop. how you fixed It ?

315cqab said:
after i flashed the cm rom, i got the same problem. after flash the stock ROM or official firmware, It keep bootloop. how you fixed It ?
Click to expand...
Click to collapse
Do you still need the method i have gone through?

do you know how to flash the official ROM or firmware back? now i can only flash the custom ROM

315cqab said:
do you know how to flash the official ROM or firmware back? now i can only flash the custom ROM
Click to expand...
Click to collapse
Sorry even i need this. Currently i have the same problem. I cant flash official firmware or the one that is based on official. I need the solution

Same here, after install CM 14.1, i can't go back to official or rom based in Stock...

gussbravo said:
Same here, after install CM 14.1, i can't go back to official or rom based in Stock...
Click to expand...
Click to collapse
I have several problems too including not being able to run stock anymore. (endless black screen after experia logo). I tried flashtool (latest stock via xperifirm), Sony's flashtool. Companion didn't even want to flash (UEGetPhoneInfoMissingInfo), and left me wondering wether something is corrupt.
I've been running CM's for a while now and was wondering why NFC was not working. Not sure if it needs an updated firmware or what.
Other problem I've seen is that "fastboot flash recovery" always gives an error. "fastboot flash boot" works (this is how I install TWRP).
Can I try zeroing mmcblk0 or would that brick it? (does it really need to have a TA partition to accept boot connection? How does Sony init it anyways?)
I think I have a mmcblk0 backup from after unlocking (DRM lost though) but perhaps that will give me a somewhat clean situation again. Or perhaps I can compare it.
Edit: dd-ed my old mmc backup and now Xperia Companion didn't give an error anymore, did a factory reset, and after a long wait of the blue waving animation, I got it to work.
Even NFC firmware update started after rooting and deleting /data/ucf folder.
Now I want to go back to Nougat xD