What happens to SGS if I brit my phone? - Galaxy S I9000 Q&A, Help & Troubleshooting

why I riisk to brit my phone if I install a new firmware? Why could SGS be unable to boot? Is it a problem wit the bootloader?

If you mess around with leaked or custom firmware there are any number of ways your phone could be bricked. That's why it is very important to do a lot of reading and follow instructions very carefully. Nothing is ever fool-proof and there's even risks with official firmwares.

you can brick your phone fully if you flash a bootloader and it fails. most of the time your phone is bricked you should be able to fix it by entering download mode.

do you know if there's a wiki that explains the bootloader in android, the partitions etc.?
Im curious

Related

what is the possiblity of bricking phone

Greetings,
How many ways are there to brick the phone.
If im flashing the original rom of the company and suddenly my computer switch off my phone will be bricked.?
Thanks
samy.3660 said:
Greetings,
How many ways are there to brick the phone.
If im flashing the original rom of the company and suddenly my computer switch off my phone will be bricked.?
Thanks
Click to expand...
Click to collapse
If you can enter bootloader mode, most likely you can recover. Just try to re-flash the ROM
If you do not flash a new bootloader when upgrading ROMS then you should be fine because as long as there is access to the bootloader you can recover from a failed flash. If you are flashing a new bootloader as part of a ROM then make sure nothing happens to the computer during the initial part of the flashing process when the bootloader is changed, if it fails here then chances are you will have a brick. Another way of bricking is flashing a G3 bootloader to a G4 device. A G4 device currently needs no bootloader upgrades so jsut make sure the ROM you are flashing doesn't have a bootloader.

[Q] how to return to stock recovery with locked bootloader?

im gona send my phone in as a replacement, but i want to make sure everything looks stock before it send it in, i found a couple of ways to return to stock but i keep getting signiture verified failed, and i assume its because i have an unlocked bootloader, can any 1 help?
You should be able to find the stock rom for unlocked users in the development section. Just flash that and you will be back on stock.
But you can't re-lock the bootloader. When you unlocked it you voided the warranty, and it stays that way.
If it is a physical hardware problem, you should be able to still get warranty though.
Sorry, I meant to say my bootloader is locked, I don't have a problem with the rom, but the recovery. I am on ra recovery atm and I want to go back to google's stock. Is there anyway to do that?
Im pretty sure this works for all phones but if you flash Official OTA it will put everything back to stock(except bootloader if it has been unlocked) but doing this you will also loose root as well
i would wait for some one to tell you another way to get back to stock recovery, im sure there is a way to do it in adb or something.. Flashing the official OTA should be like a last thing wanting to do
Look for the stock recovery Tom for your phone then just flash with fastboot. That's the easiest way that I. Did it.
sent from outter space
codearray said:
Look for the stock recovery Tom for your phone then just flash with fastboot. That's the easiest way that I. Did it.
sent from outter space
Click to expand...
Click to collapse
He cant do fastboot, he has locked Bootloader.
yeah, it saids verification failed and wouldnt let me flash anything onto it
oops my bad. I had an unlocked bootloader. My other phone is locked.
sent from outter space
vvaffles said:
yeah, it saids verification failed and wouldnt let me flash anything onto it
Click to expand...
Click to collapse
Yeah i had the same problem when i tried to revert mine to stock. My bootloader was lock and wouldnt let me reflash the stock rom with verification failed.
NOT SURE IF THIS IS THE CORRECT WAY, DO AT YOUR OWN RISK :
I renamed the image to PASSIMG.zip and booted into bootloader. The bootloader automatically searches for PASSIMG and when it found it went through an update/installing process which took about 5minutes. When it booted phone was unrooted again, and had the stock recovery.
Once that was done, i installed the FRF85 (i think) update.zip from bootloader recovery, then did the same with update.zip for FRF91.
Again not sure if this was the correct way as i have never seen posts directing to do it this way - have posted questions about it in the past week or two, but never got any responses...
I'm gonna bump this thread up again. I tried downloading the original PASSIMG file for the stock and when I try and flash it by putting it on the SD card I get that the main file is older and the install is aborted. I can't fastboot the files because my bootloader is not unlocked. I'm currently running a FRG83 based ROM, does this matter? I'd like to return my phone to stock recovery and stock ROM, but so far every attempt has been met in failure... I guess it's an irony of rooting a phone without unlocking a bootloader. If you have to send it in for repairs you have to unlock the bootloader to return to stock, or you can't return to stock and you're left with custom recovery and root... either way HTC knows you're rooted. I know my issue is a hardware issue, but it would be my luck they decide to void my whole warranty.
You can't just PASSIMG your way back from FRG83, if you have it - since there's no PASSIMG for FRG83 yet (at least I'm not aware of one, and looks like Google isn't either), and the system is designed not to flash older builds. Trying to use PASSIMG to return to older builds requires some heavy preparations (has to be rooted, then downgrading HBOOT and probably flashing initial system.img from an older build through adb in recovery, using flash_image). It's possible and not very hard to do, but most probably beyond "1-click-root"ers' skills. All the relevant info is in the Wiki, so if you want to attempt it - you can try.
Unrooting FRG83 (reflashing stock recovery from FRF91, removing su and Superuser.apk from root shell) might be easier.
Also, put attention that if the phone has SLCD screen - the official stock FRF91 won't work on it.
I actually was able to PASSIMG to FRG33 then OTA back to FRG83. which I thought was odd due to the fact that I was on a FRG83 based rom. Oh well, it's 100% back to stock now. So even though people say that a rooted/unlocked phone only voids your software warranty I don't have to worry about it. Yay for keeping a locked bootloader.

[Q] Vodafone UK Nexus One to Stock Nexus One

Hi all,
Apologies if this has been answered elsewhere, I checked the FAQ and a forum search and found references that this could be done but no real instructions.
My friend has a Vodafone UK Nexus One and as you probably know when Google release an OTA it's about a billion years (or at least it seems) before it's rolled out to him as it is my understanding that Vodafone have their own special build. Therefore I'm wondering if there's any way of flashing a stock ROM onto his Nexus One (probably after unlocking the bootloader) so he can get future OTA upgrades when everyone else does?
Any pointers gratefully accepted
- echo
You can unlock the bootloader if you want, or not.
If you unlock the bootloader, download the FRG83 system image from http://developer.htc.com and use fastboot to flash over the system and boot images
If you don't want to unlock it, then use SuperOneClick to gain root, install ROM Manager and use that to flash a custom recovery and boot into it. From there you can flash the stock but with root .zip from here: http://forum.xda-developers.com/showthread.php?t=927935
Thanks Rusty, that seems to answer it! Now I've just got to convince my friend that flashing like this isn't actually that difficult and dangerous
As you're not touching the radio, it's not dangerous at all. Worst case scenario is you lose your data, so take a backup first to be safe.

[Q]Please explain partition and root problems

Hi, can somebody please explain all these partition and root problems everyone's been having with this phone?
If i root am i safe or will i corrupt my phone or random reboots and stuff?
Does it actually have a problem even with rooting 100% correct with no mistakes?
If i root and install cm for example will i have problems or only if i temper with partitions?
Thanks in advance
If you follow the tutorials (and really read and understand it!) to root the phone, either with Chainfires Autoroot or (what I prefer) flash TWRP custom recovery and then the latest superSU after unlocking the bootloader for sure it´s a very safe procedure.
A rest of risk will ever be when you do anything to your phones software,so there´s no guarantee.
http://forum.xda-developers.com/moto-g-2014/general/xt1063-t3018818
Wolfcity said:
If you follow the tutorials (and really read and understand it!) to root the phone, either with Chainfires Autoroot or (what I prefer) flash TWRP custom recovery and then the latest superSU after unlocking the bootloader for sure it´s a very safe procedure.
A rest of risk will ever be when you do anything to your phones software,so there´s no guarantee.
http://forum.xda-developers.com/moto-g-2014/general/xt1063-t3018818
Click to expand...
Click to collapse
Thank you very much! if i dont lock bootloader again and mess with partitions or install other modems etc im safe right?
Yes.There is no need to flash any Modems in this case and no need to lock the BL again.
Never say never but if you do the right things you should be safe.

How do I remove TWRP?

I have the Amazon variant of the 16gb Blu R1 HD. I installed TWRP with the Unlock Tool for all versions tutorial (https://forum.xda-developers.com/r1-hd/how-to/unlock-tool-t3561333) on this forum and also removed ads. I would like to get back to the stock bootloader and image for my phone, to receive OTA updates and have the original experience, I am alright with having the ads back, I would just like my phone the exact same way it came from the factory. I know the updated roms will be ported and etc. I would like it back as the way it came, ads and all. (I'm aware I will not get my warranty back.) I read this tutorial: https://forum.xda-developers.com/r1-hd/how-to/firmware-amazon-blu-r1-hd-t3428197 but I'm not sure if it will work with TWRP, I'm confused whether or not fastboot works with TWRP installed. I would also like the bootloader to be locked again as well, I'm not sure whether or not flashing stock firmware would do this. If anyone could help explain this to me or point me to a tutorial somewhere it would be appreciated. I searched through the forum for similar entries, I didn't find anything for the R1 HD specifically, and entries for other phones on removing twrp/flashing stock recovery didn't seem to make sense. I apologize if I missed another post concerning this issue. Thanks.
Ladyslayer said:
I have the Amazon variant of the 16gb Blu R1 HD. I installed TWRP with the Unlock Tool for all versions tutorial (https://forum.xda-developers.com/r1-hd/how-to/unlock-tool-t3561333) on this forum and also removed ads. I would like to get back to the stock bootloader and image for my phone, to receive OTA updates and have the original experience, I am alright with having the ads back, I would just like my phone the exact same way it came from the factory. I know the updated roms will be ported and etc. I would like it back as the way it came, ads and all. (I'm aware I will not get my warranty back.) I read this tutorial: https://forum.xda-developers.com/r1-hd/how-to/firmware-amazon-blu-r1-hd-t3428197 but I'm not sure if it will work with TWRP, I'm confused whether or not fastboot works with TWRP installed. If anyone could help explain this to me or point me to a tutorial somewhere it would be appreciated. I searched through the forum for similar entries, I didn't find anything for the R1 HD specifically, and entries for other phones on removing twrp/flashing stock recovery didn't seem to make sense. I apologize if I missed another post concerning this issue. Thanks.
Click to expand...
Click to collapse
this is not quite a normal request.
any and all changes done to your phone are done at your own risk, no guarantee that the process will be "safe". and no guarantee the end result will be as expected.
I can upload stock system, boot, and recovery images.
download them, unzip the file. put the 3 .img files to the phone.
reboot phone to twrp.
select install, browse to the folder you loaded files to, you should not see the file yet. Select flash image in lower part of screen. Now select system.img, on next screen select system and swipe to confirm.
when done do same for boot.img to boot
then recovery to recovery
when all three are done do a wipe(factory reset)
this should bring you back to prime v6.1
be advised that re-locking the boot loader has potential of bricking the pone so it is not advised to do it.
also on all the early versions there are reports that after ota update with unlocked bootloader it caused a bootloop most times it was recoverable by performing "oem unlock" again.
once booted to v6.1 I suspect there will be proper update notice. but if not here is a list of the official update download links.
6.1 to 6.4
http://hwfotadown.mayitek.com/ota/r....4_GENERIC_6.0_20160710-00151468612925207.zip
6.4 to 6.5
http://hwfotadown.mayitek.com/ota/r....5_GENERIC_6.0_20160729-21551470255454500.zip
6.5 to 6.6
http://hwfotadown.mayitek.com/ota/r....6_GENERIC_6.0_20160823-20201472826184648.zip
7.4.2 to 8.4
http://hwfotadown.mayitek.com/ota/r..._V8.4_GENERIC_6.0_20170505-18551493981392.zip
17 to 21
http://hwfotadown.mayitek.com/ota/r...RIC_6.0_20170505-17451495815395129/update.zip
==>>V6.1 images.zip
.
.
@Ladyslayer
Can you tell your experience to restore phone to original condition?
Were you able to avoid bootlop and relock bootloader?
After development ceased I also wanted to restore my phone to original factory state but following restore guides leaves my phone in bootloop. BTW in @rootjunky thread there are all original 6.1 partitions that is if you feel brave and lucky, myself am scared to flash these.
@mrmazak
I think warnings in guides are misleading. Most people are aware of risks to flash modified firmware but they are not aware there is no way to restore phone to original firmware once they modify phone.
No intention to criticize you. Thank you for your effort to keep modified firmwares up to date. Looks like you are only one not giving up
kfn said:
@Ladyslayer
Can you tell your experience to restore phone to original condition?
Were you able to avoid bootlop and relock bootloader?
After development ceased I also wanted to restore my phone to original factory state but following restore guides leaves my phone in bootloop. BTW in @rootjunky thread there are all original 6.1 partitions that is if you feel brave and lucky, myself am scared to flash these.
@mrmazak
I think warnings in guides are misleading. Most people are aware of risks to flash modified firmware but they are not aware there is no way to restore phone to original firmware once they modify phone.
No intention to criticize you. Thank you for your effort to keep modified firmwares up to date. Looks like you are only one not giving up
Click to expand...
Click to collapse
well you can go back to locked but it is tricky. Think of it like this.
unlocking , allows anything you put on phone to try and load.
when you re-lock it only properly signed images are allowed to load.
so you can potentially lock yourself out of allowing phone to boot up, so the warning is more relevant when trying to go back to a locked state.
kfn said:
@Ladyslayer
Can you tell your experience to restore phone to original condition?
Were you able to avoid bootlop and relock bootloader?
After development ceased I also wanted to restore my phone to original factory state but following restore guides leaves my phone in bootloop. BTW in @rootjunky thread there are all original 6.1 partitions that is if you feel brave and lucky, myself am scared to flash these.
@mrmazak
I think warnings in guides are misleading. Most people are aware of risks to flash modified firmware but they are not aware there is no way to restore phone to original firmware once they modify phone.
No intention to criticize you. Thank you for your effort to keep modified firmwares up to date. Looks like you are only one not giving up
Click to expand...
Click to collapse
Sorry guys I have yet to try it out, I don't have a lot of time and am a little nervous to bite the bullet. @kfn, did you follow the guidelines in the above post to restore to original condition or a different set of instructions from somewhere else? Btw any suggestions on how to back up pretty much everything? Sorry Noob here obviously.
I flashed 3 original partitions system, boot, recovery as described by mrmazak then I took OTA update. After OTA update phone was in bootloop. I did not bother with backup because I do not have important data on phone.
kfn said:
I flashed 3 original partitions system, boot, recovery as described by mrmazak then I took OTA update. After OTA update phone was in bootloop. I did not bother with backup because I do not have important data on phone.
Click to expand...
Click to collapse
Which version update was it?
I can't be certain about the 8.4 or 21 updates, but older ones when that happened you needed to boot into fastboot mode and do oem unlock again.
kfn said:
I flashed 3 original partitions system, boot, recovery as described by mrmazak then I took OTA update. After OTA update phone was in bootloop. I did not bother with backup because I do not have important data on phone.
Click to expand...
Click to collapse
Did you re-lock the bootloader or was this because of an unlocked bootloader?
It was a quite a while ago, got 3 partitions from ColtonDRG's thread:
https://forum.xda-developers.com/r1-hd/how-to/guide-convert-to-prime-rollback-ota-t3432499
I downloaded from his website, I believe they were 6.1 versions.
At the time 7.4.2 was current firmware, I think phone rebooted few times taking OTA updates. And yes 'fastboot oem unlock' trick worked to get rid off bootloop.
I presume fastboot oem lock might relock bootlader but got scared to try it because of bootloop.
kfn said:
It was a quite a while ago, got 3 partitions from ColtonDRG's thread:
https://forum.xda-developers.com/r1-hd/how-to/guide-convert-to-prime-rollback-ota-t3432499
I downloaded from his website, I believe they were 6.1 versions.
At the time 7.4.2 was current firmware, I think phone rebooted few times taking OTA updates. And yes 'fastboot oem unlock' trick worked to get rid off bootloop.
I presume fastboot oem lock might relock bootlader but got scared to try it because of bootloop.
Click to expand...
Click to collapse
Do you still have the phone? Have you done the OTA updates since then with an unlocked bootloader?
did not try another OTA, put back modified ROM and disabled OTA.
Here post #312 with similar unanswered question about relocking bootloader, it is unclear for me if another OTA would properly relock it without bricking.
https://forum.xda-developers.com/r1...tock-rom-6-5-flashed-via-twrp-t3455532/page32
@mrmazak, do you know whether or not installing OTA updates would relock the bootloader? Wouldn't it be possible to do fastboot OEM lock and then do OTA updates without the risk of a bootloop? Noob question: does locking the bootloader reset the phone as well? I seem to have read something about this but I can't remember.
Ladyslayer said:
@mrmazak, do you know whether or not installing OTA updates would relock the bootloader? Wouldn't it be possible to do fastboot OEM lock and then do OTA updates without the risk of a bootloop? Noob question: does locking the bootloader reset the phone as well? I seem to have read something about this but I can't remember.
Click to expand...
Click to collapse
The update has not relocked the bootloader before.
Let me clearify a little.
There are three things I know that get changed when doing OEM unlock
1. Unlock status changed to a yes
2. Secure status changed to a no
3. Warranty status changes to no
After an ota #2 above( secure ) changes back to yes
This conflict is what makes the boot loop. As far as I know.
I do not know what it does when put back to lock and you do an ota.
I think each time you change, lock or unlock it needs to be reset the phone.
mrmazak said:
The update has not relocked the bootloader before.
Let me clearify a little.
There are three things I know that get changed when doing OEM unlock
1. Unlock status changed to a yes
2. Secure status changed to a no
3. Warranty status changes to no
After an ota #2 above( secure ) changes back to yes
This conflict is what makes the boot loop. As far as I know.
I do not know what it does when put back to lock and you do an ota.
I think each time you change, lock or unlock it needs to be reset the phone.
Click to expand...
Click to collapse
Wouldn't it change number one to a no, and two to a yes? What is the likelihood of a bootloop out bricking the phone if I re-lock the bootloader or do an OTA with the bootloader relocked? Isn't that the same as doing a normal OTA with a phone that had no changes from factory version, just the warranty status is a no and that's it?
Ladyslayer said:
Wouldn't it change number one to a no, and two to a yes? What is the likelihood of a bootloop out bricking the phone if I re-lock the bootloader or do an OTA with the bootloader relocked? Isn't that the same as doing a normal OTA with a phone that had no changes from factory version, just the warranty status is a no and that's it?
Click to expand...
Click to collapse
I do not know for sure. And there fore cannot recommend to do it. In the event something goes wrong and bootloader is locked, you cannot use fastboot to flash a repair, there fore MY opinion is the same "DO NOT relock bootloader". If something goes wrong it will be a brick.
Run stock version un modified all you want but if you unlocked I do not think you should relock. My opinion, do as you want.

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