Flash a new bootloader - JAM, MDA Compact, S100 Software Upgrading

It is possible to flash a new bootloader on my mdac? I think that mine is fault...

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[Q] How can we update to the latest bootloader available?

As the title says, how can we update to the latest bootloader version available?
it comes automatically with the google updates
just like the recent added one on 2.3.3
AllGamer said:
it comes automatically with the google updates
just like the recent added one on 2.3.3
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Not all of us have the official ROM; so that's not an option.
I am running a custom ROM, and I have updated manually the newest Radio. The only thing that is missing is the bootloader. Is there any way to do that?
if you use the search feature, somebody did upload the bootloader.img for 2.3.3
as a last resort, you can download the 2.3.3 stock ROM. extract it and find bootloader.img and flash it via fastboot
edit: http://forum.xda-developers.com/showpost.php?p=11661588&postcount=2596
download bootloader.7z
extract
get bootloader.img
put it in ur /sdk/tools/ folder (yes you have to have the android SDK set up for 2.3.X)
fastboot flash bootloader bootloader.img
Click to expand...
Click to collapse
select "reboot bootloader" and you should see the new version of the bootloader
old bootloader:
bootloader I9020XXJK1
new bootloader:
bootloader I9020XXKA3
Nice! Thanks for that!
Currently my bootloader is unlocked. If I flash another bootloader, will it remain unlocked? or it will be locked and I would have to unlock it again?
wargy said:
Nice! Thanks for that!
Currently my bootloader is unlocked. If I flash another bootloader, will it remain unlocked? or it will be locked and I would have to unlock it again?
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Click to collapse
Yes it will remain unlocked, it'll just simply override your current bootloader with the newer one. I listed above the new and old bootloader to see if it worked.
It wont ever be re-locked unless you type: fastboot oem lock
Yeap, it worked perfectly fine - still unlocked! Thank you very much!

How do you update the bootloader?

Does the bootloader update when you install a new version of a stock rom such as 2.3.4 or how do you update it?
No, once you unlock it, it's going to stay unlocked unless you do a fastboot oem lock
There is no such thing as updating the bootloader

Quick Qestion About Relocking The Bootloader

Couple quick question regarding locking the re-locking the bootloader.
First off I have the ATT One X rooted with TWRP Recovery. To go back to stock if I so choose, would I have to reflash the stock recovery then do fastboot oem lock before running the ruu or can i just fastboot oem lock the bootloader without flashing the stock recovery, then run the ruu?
I think I have to reflash the stock recovery first before relocking the bootloader. If that's the case, can someone link to the stock recovery img file?
I also read that if you're currently rooted and has your CID, you can update to 2.20 and root again...is that still the case?
Thanks
plmiller0905 said:
Couple quick question regarding locking the re-locking the bootloader.
First off I have the ATT One X rooted with TWRP Recovery. To go back to stock if I so choose, would I have to reflash the stock recovery then do fastboot oem lock before running the ruu or can i just fastboot oem lock the bootloader without flashing the stock recovery, then run the ruu?
I think I have to reflash the stock recovery first before relocking the bootloader. If that's the case, can someone link to the stock recovery img file?
I also read that if you're currently rooted and has your CID, you can update to 2.20 and root again...is that still the case?
Thanks
Click to expand...
Click to collapse
You can just fastboot oem lock, the RUU will take care of restoring the original ROM.
EDIT: This is my 123 post
plmiller0905 said:
Couple quick question regarding locking the re-locking the bootloader.
First off I have the ATT One X rooted with TWRP Recovery. To go back to stock if I so choose, would I have to reflash the stock recovery then do fastboot oem lock before running the ruu or can i just fastboot oem lock the bootloader without flashing the stock recovery, then run the ruu?
I think I have to reflash the stock recovery first before relocking the bootloader. If that's the case, can someone link to the stock recovery img file?
I also read that if you're currently rooted and has your CID, you can update to 2.20 and root again...is that still the case?
Thanks
Click to expand...
Click to collapse
If you want to go back to stock just fastboot oem lock then run the RUU. This is what I did. You can then re-unlock the bootloader and install SuperSU to reestablish root. It's pretty easy. Keep in mind, once you go to 2.20 you can not flash boot.img or radios from TWRP. You have to use adb to flash the boot.img, then boot into recovery and flash the ROM.
If you go into the Dev section, one of the first threads covers this and actually has a guide so you wouldn't have had to ask a question.
danny39 said:
You can just fastboot oem lock, the RUU will take care of restoring the original ROM.
EDIT: This is my 123 post
Click to expand...
Click to collapse
So even though I have a custom recovery (TWRP) I don't have to flash the stock recovery before I relock the bootloader?
plmiller0905 said:
So even though I have a custom recovery (TWRP) I don't have to flash the stock recovery before I relock the bootloader?
Click to expand...
Click to collapse
Here. You don't need the 1.85 RUU though. Just use 2.20 and skip the manual update from AT&T.
http://forum.xda-developers.com/showthread.php?t=1812039&highlight=2+20+unlock
Butters619 said:
If you want to go back to stock just fastboot oem lock then run the RUU. This is what I did. You can then re-unlock the bootloader and install SuperSU to reestablish root. It's pretty easy. Keep in mind, once you go to 2.20 you can not flash boot.img or radios from TWRP. You have to use adb to flash the boot.img, then boot into recovery and flash the ROM.
If you go into the Dev section, one of the first threads covers this and actually has a guide so you wouldn't have had to ask a question.
Click to expand...
Click to collapse
Butters619 said:
Here. You don't need the 1.85 RUU though. Just use 2.20 and skip the manual update from AT&T.
http://forum.xda-developers.com/showthread.php?t=1812039&highlight=2+20+unlock
Click to expand...
Click to collapse
Thanks...I really appreciate it
plmiller0905 said:
So even though I have a custom recovery (TWRP) I don't have to flash the stock recovery before I relock the bootloader?
Click to expand...
Click to collapse
No, it's the opposite: You can't RUU until you relock. It will fail if you try.
iElvis said:
No, it's the opposite: You can't RUU until you relock. It will fail if you try.
Click to expand...
Click to collapse
Oh ok...gotcha...so fastboot lock bootloader then run the ruu...great.
Like I mentioned before...I just got a little confused because people on YouTube is also flashing a stock recovery IMG before running the ruu.
Sent from my HTC One X using Tapatalk 2
plmiller0905 said:
So even though I have a custom recovery (TWRP) I don't have to flash the stock recovery before I relock the bootloader?
Click to expand...
Click to collapse
RUU will restore your recovery to the stock recovery.
Just keep in mind that once you lock your bootloader you won't be able to boot your phone until you run the RUU. So make sure you're ready to go with the RUU before you fastboot oem lock.

[Q] Question regarding the Xperia J

Right now I have the 4.0.4 Android( stock version) of the xperia j with locked bootloader and I've rooted-it and I've also installed the CWM.
I would like to install Cyanogen Mod 10.1 but since I have the 11.0.A.7.5 firmware I have locked bootloader and I can not flash it.
My question is if I can flash an older stock firmware and by doing so will I be able to unlock my bootloader?
From what I understand right now since I have a locked bootloader I can only flash stock ROMs so if that is correct than can I just flash an older stock ROM, one that will allow me to unlock my bootloader and than flash CM 10.1 on my Xperia J?
And another question- I know that by unlocking the bootloader I will also loose my warranty but from searching the XDA forums I saw that I can make a backup copy of my stock ROM and flash it to relock the bootloader again. Is that accurate ?
Thanks in advance for your help!
First is your bootloader unlockable. Then you can unlock on any firmware via sonys website. I dont think there's a cm10.1 released for j. If you unlock your bootloader you will loose DRM keys forever even if you relock they will still be gone that's how Sony will know your bootloader was unlocked.
It is not unlockable, that is why I wanted to flash another version of a stock ICS.
Won't that allow me to unlock the bootloader ?
From what I understood right now I can only flash stock Roms with the locked bootloader, is it correct or since I have the "NO" status at the bootloader I can't even do any of that ?

How to relock Bootloader???

Hi all !!!
As soon as I received my ZS551KL, I unlocked bootloader, installed TWRP and rooted it.
I cannot update to Android 8 because my bootloader is unlocked, but I cannot found how to relock it for updating. I have tried fastboot oem lock and fastboot oem relock in fastboot mode without success.
Do you know how to do it?
Thank you so much :good:
You can flash raffyvito's modified Oreo zip, that way you get the stock recovery from which you flash the official Asus zip with the firmware updates, then you flash TWRP again and you're golden. You should check out his thread.
Hi guys. Do we have any news on how to relock the bootloader? Also can someone of you share the stock oreo recovery?

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