Develop Bugs

[Q] R800a can not OTA update or enter fastboot, root problems? mode.

I recently purchased a R800 from someone on Craigslist. The phone is already rooted, permanantly I think since it is rooted after doing a factory restore. It is not sim locked, I believe its factory unlocked.
I tried to do the OTA update, which downloads, but fails to install. It appears to get about 3/4 of the way done, reboots and gives me an "update failed" message.
I wanted to unlock the boot loader, I got the unlock key from SE. I must of tried 10 times to get the phone to boot into fastboot mode, it NEVER does it. It simply boots up normally. I even got an app that makes it easy to reboot into restore or fastboot modes (just click an option and it reboots), however just like before the phone simply reboots normally. I even did a factory restore prior to trying the update... no go.
Should I try to remove the root access? Is this what is giving me all the problems. I was able to successfully install root explorer and titanium backup and both of those programs worked fine.
R800i, Android 2.3.3, Kernel 2.6.32.9-perf [email protected] #1, Build number 3.0.1.A.0.145
Edit: Title should be "Can not OTA or enter fastboot mode, root problems?"

Is your phone sim locked? Sim locked phones need to be unlocked before able to unlock bootloader or fast load. After you unlock bootloader make sure you never ota update.
Sent from my XPlay using XDA App.

Your phone has a locked bootloader and a factory lockout on fastboot.
Best advice to you is flash the r800a world generic 2.3.2 root it with gingerbreak then ota update. Use a program called wontanserver as its super easy.
Dont get anyone to remove your factory locks on fastboot until you read tons of threads on these fourms from the last couple months.

Ok, lets see....
Deoxlar said:
"Is your phone sim locked? Sim locked phones need to be unlocked before able to unlock bootloader or fast load. After you unlock bootloader make sure you never ota update."
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My phone is the R800a. It was my understanding that this phone was never locked (factory unlocked). It came in an official Sony Ericsson box and has no carrier branding on it what-so-ever. It was not purchased through a carrier. It does have a weird stock data APN called "Telekila"?!?!?
sdlaurin said:
"Your phone has a locked bootloader and a factory lockout on fastboot.
Best advice to you is flash the r800a world generic 2.3.2 root it with gingerbreak then ota update. Use a program called wontanserver as its super easy.
Dont get anyone to remove your factory locks on fastboot until you read tons of threads on these fourms from the last couple months."
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Click to collapse
Doesn't wontonserver require credits to run? How expensive does this get?
I didn't know the phone could have a factory lock on the bootloader. I did go to the SE website where you get the unlock key and it was successful in giving me a key... Well I shouldn't exactly say "successful", it did give me a key code to use if and when I can unlock the bootloader, weather or not that code is actually legit remains to be seen. I'm a bit skeptical now since you said the phone is bootloader locked from the factory. I though SE was allowing their phones to be unlocked. I recently unlocked my Motorola Atrix and was expecting to do the same with this phone.
Thank you guys for the advice. I love this phone so far but I can't wait to get a custom rom on it

It uses credits but they are free.
There are currently 2 gentlemen on these forums that can remove your fastboot locks and unlock your bootloader.
Have a look for thier threads on this matter

I would like to have this done now, so gentlemen, whomever is able to do this please message me and we can work something out. Im dieing to get a new rom on this awesome phone/game console.
Sent from my R800i using xda premium

If you need help with unlocking your phone contact Alejandrissimo he does Unlocks

I flashed the r800a world generic 2.3.2 rooted it with gingerbreak then ota updated.I get the same thing as DMpire , reboots and gives me an "update failed" message.
Is this because I removed some of the stock apps that came on the phone after it was rooted? Anyone know about this?
Does it matter if the SD card is mounted or not?

Removing stock apps then trying to ota isnt going to happen. Reflash, root, ota, then remove your stock apps

Is there any easy way to do this? can I reflash it as it has a locked bootloader, or do I have to get the bootloader unlocked?

JDMpire said:
I would like to have this done now, so gentlemen, whomever is able to do this please message me and we can work something out. Im dieing to get a new rom on this awesome phone/game console.
Sent from my R800i using xda premium
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Christian6809 said:
Is there any easy way to do this? can I reflash it as it has a locked bootloader, or do I have to get the bootloader unlocked?
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Add me to gtalk pals: alejandrissimo[at]gmail.com

Google wontanserver its free

Plz help me unlock note 2 n7100 locked to o2 uk

i am in need of advice, i have acquired a galaxy note 2 n7100, locked to O2 uk, plz advice me how to go abt unlocking it, i have read all the relevent posts here, and i am not sure whether i shd go for paid unlocking services( seems risky) or root it first then unlock it via galaxsim unlock, your experienced and valuable advice will be much appriciated

mohit141785 said:
i am in need of advice, i have acquired a galaxy note 2 n7100, locked to O2 uk, plz advice me how to go abt unlocking it, i have read all the relevent posts here, and i am not sure whether i shd go for paid unlocking services( seems risky) or root it first then unlock it via galaxsim unlock, your experienced and valuable advice will be much appriciated
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Click to collapse
Using an unlock code is not risky at all. In fact using galaxsim unlock is riskier although I have used it with no issues at all. Galaxsim needs root access and don't forget to back up your EFS folder if you decide to use it.
Sent from my ASUS Transformer Pad TF700T using xda app-developers app

mohit141785 said:
i am in need of advice, i have acquired a galaxy note 2 n7100, locked to O2 uk, plz advice me how to go abt unlocking it, i have read all the relevent posts here, and i am not sure whether i shd go for paid unlocking services( seems risky) or root it first then unlock it via galaxsim unlock, your experienced and valuable advice will be much appriciated
Click to expand...
Click to collapse
Roll back to 4.1.1, unlock for free using instructions on here, then flash to 4.1.2.
You will need to carry out full EFS backup, then get Samsung usb drivers, and ODIN, download 4.1.1 stock image, flash, factory reset and clear cache, then carry out the unlock procedure found in these forums, then download and flash your choice of stock 4.1.2 rom, and bingo, unlocked and updated phone.

(InsertNameHere) said:
Roll back to 4.1.1, unlock for free using instructions on here, then flash to 4.1.2.
You will need to carry out full EFS backup, then get Samsung usb drivers, and ODIN, download 4.1.1 stock image, flash, factory reset and clear cache, then carry out the unlock procedure found in these forums, then download and flash your choice of stock 4.1.2 rom, and bingo, unlocked and updated phone.
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So how do I roll back to 4.1.1? Need some guidance here.. the phone is on 4.1.2 and locked to vodafone at the moment as far as I'm aware.
Thanks in advance. :good:

[Q] firmware downgrade

has anyone figured out how to downgrade 4.3 ota to 4.1.1. can't unlock my phone with 4.3 installed. thanks

dandydon414 said:
has anyone figured out how to downgrade 4.3 ota to 4.1.1. can't unlock my phone with 4.3 installed. thanks
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There have been several well documented reports of successfully downgrading the ROM (only) from 4.3 to 4.1.1. What has also been established is that you cannot downgrade the 4.3 bootloader to 4.1.1 which is required for the free unlock process to work. If you are seeking, therefore, to free unlock your phone, sorry but it won't work. Once you have the 4.3 via OTA, you will need an unlock code.

Larry2999 said:
There have been several well documented reports of successfully downgrading the ROM (only) from 4.3 to 4.1.1. What has also been established is that you cannot downgrade the 4.3 bootloader to 4.1.1 which is required for the free unlock process to work. If you are seeking, therefore, to free unlock your phone, sorry but it won't work. Once you have the 4.3 via OTA, you will need an unlock code.
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thanks for the reply...hopefully by the time I'll need to travel abroad (in september) someone would have figured out a way to unlock for free this phone running on 4.3.. bought this on ebay for use abroad and never occurred to me to make sure it wasn't upgraded to 4.3.. live and learn.

so many unlock threads... so is a 4.3/4.4.2 sim unlock possible?

I've done a ton of searching for methods to unlock the I747m Canadian variant of the S3 and always get confused because I'm a not too tech savvy newb. Does anyone who cares to read this know if there's a method of downgrading the s3 to 4.1 ? I remember an ambiguous thread on how you can use mobile Odin to downgrade everything but the boot loader but I have no idea how that works or where I even found that thread. Can anyone point me in the right direction, if there is one?

Once updated to 4 3 you cannot downgrade or unlock for free

In order to use the free unlock method on an i747 or i747m, you need to be running a completely stock Samsung 4.1.1 ROM, including the 4.1.1 bootloader, to ensure that the phone actually gets unlocked.
If you have the 4.3 or higher bootloader, you cannot downgrade the bootloader. Attempts to downgrade the 4.3 bootloader to an earlier will probably brick your phone. Since you cannot downgrade the 4.3 bootloader, you cannot use the free method to unlock your phone.
Yes, you can use mobile Odin to downgrade the i747 and i747m Samsung ROM to 4.1.1 from 4.3 but your phone will still have the 4.3 bootloader which cannot be downgraded.
To sum things up: if you have the 4.3 or newer bootloader, you will need to buy an unlock code.

[Q]Android 4.1 ROM, SIM Unlock?

Hello. I recently got my hands on a T-Mobile Samsung Galaxy SIII. The phone is network locked and I need to unlock it. I already rooted the phone.
However I have not been successful in unlocking the SIM. There is a method posted here on XDA which tells you to use the menu by dialing *#197328640#. However it won't work on the versions after Android 4.1
I was wondering if anyone can share with me where I can download the stock or a custom ROM with Android 4.1 so that I can use this method to unlock the SIM.
If you know of any other methods that don't require me to pay third parties please share them with me.
Thank you.

If the phone is running a stock 4.3 or newer bootloader, you cannot use the free method to unlock the phone.

audit13 said:
If the phone is running a stock 4.3 or newer bootloader, you cannot use the free method to unlock the phone.
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That's right. I was wondering if anyone could share with me a 4.1 bootloader because I wasn't successful in finding one.

You can't flash a 4.1 bootloader over a 4.3 or 4.4.2 bootloader. Trying will probably brick the phone.