I have a question, I use the Bootloader unlock and install the android 2.3.4 with PUDDING, now I want to know if it is safe to do android 2.2 and them get the official update.
because i read that many users had trouble updating.
i dont fully understand, but i keep reading that once you unlock bootloader and then move to 2.3.4, do not downgrade else it will hard brick. now maybe that means dont downgrade with a certain moto sbf type of rom, but i dont fully understand that. i would not attempt any downgrade personally.
Hello. The subject matter says it all.
I currently have a rooted and unlocked AT&T Atrix on 1.26 version (yeah...still in ice age ) with a locked bootloader. Im with a non-US telco carrier. It came unlocked and rooted so that was great. No hassle but now I have started doing research on custom roms and webtop mods. I am trying to get around the info overload, so pls bear with my questions.
The overall goal is to have a stock/custom rom devoid of all the bloatwares and can run webtop2sd, and if that is not possible then, webtop. Very simple needs.
Option 1
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To remain on stock rom and update to 1.83 version, and then to install the webtop2sd mod. Ideally I would like to boot off Debian from the microsd card. There was a post in which a forumer mentioned that he was able to "frankenstein" the webtop2sd and webtop mods. Thats great if I understood correctly.
Option 2
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To update to 4.5.91 (probably a custom rom like Aura) and then install the webtop2sd/webtop mod.
What should be done?
I am going to update 1.26 -> 1.57 -> 1.83 -> 4.5.91 via system update. (which means I now have to signed with moto account...yes I have not as I read that there were some privacy issues.)
Through the update process, I would lose root. To keep everything clean, I am going to go through factory reset and then perform the update.
Once I am in 1.83 or 4.5.91, I will apply the root and unlock the bootloader. Which is the best way to go about this? Should I just follow the instruction here or this way. Or is there any other better way?
This is all I have for now until I install the webtop mod or the custom rom...
update your phone to wherever you want it at, then use this script to unlock the bootloader:
http://forum.xda-developers.com/showthread.php?t=1182871
after that, you can easily root your phone using the preinstall method found here:
http://forum.xda-developers.com/showthread.php?t=1138204 (second post)
if you update to 4.5.91 though, as you attempt to unlock the bootloader you will get a semi-hard brick, just have it boot up into fastboot mode and continue using the script. easy as pie!
I never got a semi-hard or *soft* brick from unlocking but that's just cause I must love to eat pudding =D . Do all the OTA updates, unlock / root, and then install the 2.3.4 fruitcake and install webtop. Best option by far, IMO, as far as the ease of transition goes. Should be cake. That's what I did and as long as you don't RSD lite with an .SBF back once on 2.3.4 OTA yer good to go.
eat yer fruitcake once updated to 2.3.4 OTA *stock gingerbread*-http://forum.xda-developers.com/showthread.php?t=1163009
Install a custom kernel if ya wanna overclock or undervolt, I would personally suggest Faux123's. -http://forum.xda-developers.com/showthread.php?t=1156040
aaand freeeze all that bloatware!-http://forum.xda-developers.com/showthread.php?t=972459
I read that its easier to update via SBF than OTA? What have your experiences been so far?
Alcapone263 said:
if you update to 4.5.91 though, as you attempt to unlock the bootloader you will get a semi-hard brick, just have it boot up into fastboot mode and continue using the script. easy as pie!
Click to expand...
Click to collapse
Maybe I should try to unlock it now... And then update.
tech_girl said:
I read that its easier to update via SBF than OTA? What have your experiences been so far?
Click to expand...
Click to collapse
well, i can't find it anymore but there is an SBF in the development forum that will allow you to update to 2.3.4 android without getting the brickable bootloader, but i personally don't see a point in using SBF. it's not meant for the end user, and using it can be risky.
SBF flashing is faster i believe, but as i said can also potentially harm your device if you're unsure of what you're doing.
SamCripp, one of the most esteemed devs here, suggests for the average person to completely stay away from sbf flashing after you've unlocked your bootloader unless you absolutely have to use it for something.
remember though, if you use the OTA update you CANNOT downgrade your device through SBF flashing, you HAVE to use the fruitcakes method. it WILL brick your device to downgrade, but only with the OTA update.
EDIT: and it's a semi-hard brick, it doesn't hurt your device in the least. you might panic at first, but it's as simple as booting into fastboot mode and finishing the script. or if you're more tech inclined, you can just do the fastboot oem unlock command through fastboot.
Phalanx7621 said:
....
eat yer fruitcake once updated to 2.3.4 OTA *stock gingerbread*-....
Click to expand...
Click to collapse
Alcapone263 said:
......
remember though, if you use the OTA update you CANNOT downgrade your device through SBF flashing, you HAVE to use the fruitcakes method.....
Click to expand...
Click to collapse
Fruitcakes??? All this jargon.... Hmmm...gotta check this out.
http://forum.xda-developers.com/showthread.php?t=1163009
yep, Fruitcakes. it's a CWM alternative to sbf flashing, much safer since it doesn't edit the bootloader at all, so there's no risk in hard bricking your device.
after you unlock your bootloader, you should install Romracer's CWM recovery here: http://forum.xda-developers.com/showthread.php?t=1204500
do all of your flashing through CWM after you unlock your bootloader, just remember to clear cache/dalvik/data between each ROM or you might get stuck in a bootloop.
Ok...CWM sounds more familiar....
If I understand correctly, I actually dont have to go via OTA. As long as I have the img file for flashing to each version, I could just use the CWM and not via OTA, right?
tech_girl said:
Ok...CWM sounds more familiar....
If I understand correctly, I actually dont have to go via OTA. As long as I have the img file for flashing to each version, I could just use the CWM and not via OTA, right?
Click to expand...
Click to collapse
well, you have to have an unlocked bootloader to get CWM. and to unlock your bootloader, you have to update to 1.8.3 or later.
after you unlock your bootloader, you can install CWM and proceed to just use CWM for your flashing needs.
i repeat again though, after you unlock your bootloader you should stay away from SBF flashing altogether. it's the quickest way to brick your device.
Alcapone263 said:
well, you have to have an unlocked bootloader to get CWM. and to unlock your bootloader, you have to update to 1.8.3 or later.
after you unlock your bootloader, you can install CWM and proceed to just use CWM for your flashing needs.
i repeat again though, after you unlock your bootloader you should stay away from SBF flashing altogether. it's the quickest way to brick your device.
Click to expand...
Click to collapse
+1
Once you unlock and get CWM installed its just a case of wiping the device and flashing zip files.
Yep after unlocking and getting rom racers cwm in, you get to have lots of fun and almost zero chance of hard bricking. Make sure you understand the pudding part. After you unlock throw rsd lite away.
After updating to 1.83 and unlocked, can I immediately installing a GB custom rom like Aura or Alien? Or do I need to update to 4.5.91 stock before I can install a custom rom? Which I assume is pre-rooted, which mean I dont have to root it..
tech_girl said:
After updating to 1.83 and unlocked, can I immediately installing a GB custom rom like Aura or Alien? Or do I need to update to 4.5.91 stock before I can install a custom rom? Which I assume is pre-rooted, which mean I dont have to root it..
Click to expand...
Click to collapse
You should be able to start flashing if you used pudding. No need to upgrade to .91 stock. I didn't. I think most roms are pre rooted now. Not that the rooting method was hard for the atrix.
I voided my warranty.
pukemon said:
You should be able to start flashing if you used pudding. No need to upgrade to .91 stock. I didn't. I think most roms are pre rooted now. Not that the rooting method was hard for the atrix.
I voided my warranty.
Click to expand...
Click to collapse
Yep thats how it works. once BL unlocked and CWM installed you can flash anything, including yes .91 stock.
Note that .91 stock OTA is not only the operating system but also modifies the bootloader hence all the hard brick warnings about flashing sbfs. When you flash zip files you don't touch the bootloader, so there is no chance of hard bricking. i.e. if you flash .91 stock from zip file from CWM as opposed to OTA, you get only the OS, not the bootloader update (which doesn't matter ).
I'm finally taking the plunge and upgrading my note 2. I'm currently on Wilson's cm12.1. I'm looking for a guide or recommendations to restore my phone to 100%stock. I know there's already some guides out there but none seem to be updated or explain how to downgrade from where I am at now with cm12.1. Any help or guidance will be greatly appreciated.
Odin back to VRAMC3 firmware which will re-lock the bootloader. You may want to re-unlock since it is getting rare these days and people might want it unlocked. Probably don't want to take an OTA of any kind regardless.. bootloader will get locked permanently.
Remember DO NOT TAKE AN OTA EVER!
Reverted back to "Locked" bootloader, but still get error when updating to 5.1.1 OTA
I just used Nexus Root Toolkit 2.0.5 to revert back to an OEM "Locked" state which I ahd confirmed by rebooting into bootloader. The reason I did this was so I would be able to update my device with OTA updates, but I keep getting an error every time I try to update to 5.1.1.
What are my options?
Unlock, flash Nexus Factory Images.
From what I've read if you get a failed OTA install it won't let you un-root, re-lock, etc... and take the OTA. This is to protect your device.
ETA: Do you even have to have the BL flag locked to take an OTA? I don't think so...
livinginavacuum said:
I just used Nexus Root Toolkit 2.0.5 to revert back to an OEM "Locked" state which I ahd confirmed by rebooting into bootloader. The reason I did this was so I would be able to update my device with OTA updates, but I keep getting an error every time I try to update to 5.1.1.
What are my options?
Click to expand...
Click to collapse
NEVER NEVER NEVER NEVER NEVER LOCK YOUR BOOTLOADER!!!!
1) This does not in ANY WAY impact OTAs.
2) This has the potential to *LOCK YOU OUT*.
Get your updates here:
https://developers.google.com/android/nexus/images
So then how can I go back to being able to update via OTA?
livinginavacuum said:
So then how can I go back to being able to update via OTA?
Click to expand...
Click to collapse
If you want to get OTA's, fastboot flash the stock system.img and boot.img > https://developers.google.com/android/nexus/images
But if you're going to do that, why not just fastboot flash the 5.1.1 factory images?
As posted above, do not relock your bootloader. It does not impact your ability to accept OTA's and can end up bricking your device.
cam30era said:
If you want to get OTA's, fastboot flash the stock system.img and boot.img > https://developers.google.com/android/nexus/images
But if you're going to do that, why not just fastboot flash the 5.1.1 factory images?
As posted above, do not relock your bootloader. It does not impact your ability to accept OTA's and can end up bricking your device.
Click to expand...
Click to collapse
Is there an idiot's proof guide to this?
And besides helping me unlock my device once again as you guys recommend, can the Nexus Root Toolkit make my life easier by flashing the the stock system.img and boot.img so that I can get OTA's?
livinginavacuum said:
Is there an idiot's proof guide to this?
And besides helping me unlock my device once again as you guys recommend, can the Nexus Root Toolkit make my life easier by flashing the the stock system.img and boot.img so that I can get OTA's?
Click to expand...
Click to collapse
Here's a guide. Note: use the "Long method" > http://forum.xda-developers.com/nexus-9/general/guide-how-to-unlock-bootloader-flash-t3035153
Toolkits are OK if you understand how to fix a problem when you run into trouble. I'd suggest that you use the manual method, but it's your decision. There's a thread in the Development section for NRT if you choose to go that way.
Will downgrading to 6.0.1 with a TWRP backup of phone brick the phone? (I ask because downgrading bootloader has been proven to brick phone)
Thanks!
If you downgrade to 6.0.1 with a TWRP backup, it may not brick your device, since the TWRP backup should only restore the system, kernel and not affect your bootloader.
However, because your bootloader is not downgraded to 6.0.1 too (and you generally cannot downgrade bootloaders), you have a mismatched firmware - you have a newer bootloader but older system. It appears that taking OTA updates for older system firmware, when you have a newer bootloader than your system, can brick your device - the old OTA update appears to overwrite your newer bootloader and lead to a brick. OTA updates appear to only check if your system is the right build and assume the bootloader is the correct build, which if you've downgraded is not the case.
So if you do downgrade, please do not use OTA updates. If you must update, only use stock firmware to update your device. It is not the downgrading that bricks a device, it's downgrading and then using OTA updates in most cases that bricks devices. The only cases I've seen where downgrading and then using OTA updates has not bricked devices is when the user has rolled back to the firmware directly preceding their current latest firmware.