Can I backup bootloader? - Nexus 5 Q&A, Help & Troubleshooting

Hey xda/nexus community,
Is it possible to make a backup of bootloader? If it is, how?
No, I am not talking about kernel (boot.img is the kernel, correct?), system, recovery, or data. Bootloader.
My Nexus 5 came with bootloader version hhz11n. The factory image from Google (4.4.4) has bootloader version hhz11k.
I have no idea how different these two are, but since hhz11n image can't be found anywhere, I want to back it up before flashing to Lollipop or Marshmallow.
My Nexus is still running 4.4.4, bootloader unlocked, rooted, with TWRP installed.
Thanks for your help!

Not answering your question, I would like to ask why you would want to backup the bootloader, while they are available for download here?

Use TWRP

Related

[Q] Bootloader Update

Heyhey.
I'm running a custom lollipop rom (crdroid 5.0.2) and twrp (2.8.5.0) on kitkat bootloader.
Now I also want to have lollipop boatloader.
Is it possible, just to flash this without loosing my data?
I heard that I have to flash motoboot.img from any stock Lollipop Rom.
I downloaded "XT1032_Retail_Brazil_502_Stock_Untouched", but I can't find a motoboot.img. Where do I get it from?
And I'm running "TWRP 2.8.5.0 _STOCK_KK is for STOCK device with f2fs userdata (NOT converted to GPE) and KitKat Bootloader" from here.
I think it will be the wrong recovery after updating bootloader. Should I change recovery before/after updating bootloader?
A lot of questions, I know. Some answers would be great.
Greets
didn't someone update (only) her/his bootloader?

[Q] How to switch from CM12 to Stock Lollipop with root?

Hi,
Situation as following:
Unlocked Bootloader
TWRP 2.8.6.0 installed
CM12
Want:
Simple way flashable Zip prerooted for unlocked Bootloader to switch back to Stock.
In the best Way without losing TWRP 2.8.6.0.
Download it, flash it in recovery
Which Flash Zip? All i see are only for locked Bootloader.
redlabour said:
Which Flash Zip? All i see are only for locked Bootloader.
Click to expand...
Click to collapse
You can use anything for a locked bootloader on an unlocked bootlader

[Q] Keep root and recovery with locked bootloader after upgrading to Lollipop?

Hi guys,
My girlfriend has a Xperia Z3, currently not rooted, bootloader is locked, no custom recovery and running Kitkat. I'm planning on rooting her phone for her install TWRP just to make a backup of the ROM, then I will update it to Lollipop right after.
I want to keep the bootloader locked because from what I've read, unlocking bootloader wipes the DRM keys or something, which apparently affects camera and even battery life for some people. I know I can back up the TA partition but that doesn't fix the fact that the camera will be affected somehow. I just don't want to take the risk and deal with the possibility.
So how would I root and install TWRP on a locked bootloader Xperia Z3 running Lollipop? I haven't seen any topics or guides on this, most are for phones with UNLOCKED bootloader so it's not really helping...
Read the Guide in the general section for rooting a locked bootloader
http://forum.xda-developers.com/z3/general/guide-rootrecovery-how-to-root-install-t3017056
You haven't researched much i see..
If you have 23.0.A.2.93 version, all you need is to Root, install TWRP, then FLASH a pre-rooted Lollipop rom.
I've read that guide already and I don't see any pre-rooted LP roms for either New Zealand or Taiwan. I know it probably won't matter, but for phones like Samsung Galaxy S5, we have CSC codes which basically gives you access to certain apps or options depending on the country of the ROM. If possible, I'd like to update to Lollipop from the official OTA and then root it from there.
Also, I'm on a newer KK firmware, which means I'll need to downgrade in order to get root. But doing that also means I lose all the contents on the phone, which I want to backup first using Titanium Backup. I understand there's a sacrifice here but I'm a bit confused as to why we couldn't just flash recovery using fastboot (like most other phones do) and then install SuperSU from TWRP? Or is the downgrade necessarily in order for us to achieve root via an unpatched exploit?
UPDATE:
Forgot to mention one major issue, my girlfriend's Z3 is D6653. The 23.0.A.2.93 firmware for D6653 is for T-MOBILE, but my girlfriend's phone is an international variant so I'm not sure it's compatible.
you know you can flash a rom with flashtool and not have it wipe the data?

[Completed] In need of help and advice to get back to stock 02uk

I providing as much information as i can (and think you need) for your help.
My HTC M8 when I bought it new from the store it came with lollipop on the 02uk network, I then got the official update to marshmallow. I was quite happy with this but needed an app that required root.
So I unlocked my bootloader, downloaded openrecovery-twrp-2.8.5.0-m8 and installed SuperSU via the recovery. But something went wrong, when I rebooted there was no OS installed, I must have accidentally deleted it. But I hadn’t made a nandroid backup at this point.
Since then I have been trying to get back to stock. I research and looked around the only way I can flash marshmallow is if I go further and pay for S-Off.
So my plan was to Install back to stock Lollipop then get the upgrade again to marshmallow.
Even this proved to be difficult. And is where I could use some advice.
My CID is HTC 02__001 So I found the Nandroid collection on XDA and downloaded
1.54.206.5 - TWRP
1.12.206.17 – TWRP
The latest updates for these seem to be very old (not Lollipop) but I gave it a shot installed the roms, the recovery and locked the bootloader. Then went to upgrade all the way to where I was. Unfortunately, after so many updates the WIFI stopped working and I was unable to upgrade further., ad the only way of repairing was reflashing the rom.
In the settings, I noticed my build number was 4.16.401.13 and remember seeing this version in the collection
So used the stock recovery from that and flashed the rom, then locked the bootloader.
The 4.16 is the international version CID__001 while this got me straight to lollipop I don't have the original bootup screen with the 02 animation. And when I go into the updates there is only 3 security updates not marshmallow.
I did attempt to download and flash OTA Marshmallow when i done this from
http://www.htc.com/us/support/htc-one-m8/news/
but kept running into errors with the bootloader signiture check, I then realised its because I needed S-Off
So at the moment I am on 4.16 international, I have unlocked the bootloader and running TWRP recovery until I can figure this out.
Would I be right in thinking I cannot use 1.54 recovery with 4.16 rom as a restore?
Or are there files that I have overlooked for 02uk lollipop stock rom and recovery?
Also if needed my baseband version 1.29
This thread is no longer needed, After extensive searching and looking at loads of different sites and options I found http://forum.xda-developers.com/htc-one-m8/help/tutorial-how-to-stock-stock-twrp-t3086860
Which was able to help me fully restore.

New TWRP 3.0.0.X installation process

So hey guys,
I got ZyxxOS 1.2 (Android 6.0) running on my Z3 and it has the old bootloader with the old TWRP.
I want to flash the new TWRP but therefor I have to get the new bootloader.
My questions are:
If I flash the new bootloader (.200 service with EMMA) will the rom be overwritten with the latest official stock firmware?
And if so, I made a backup just now and if I flash a recovery on the new bootloader, will I be able to fully recover the ZyxxOS
on new bootloader with new TWRP?
Cheers.
EDIT: I just tried it and it worked out
Flashed the .200 firmware with EMMA (5 mins), then unplugged the device, plugged it in again with vol-up (fastboot),
flashed the latest TWRP (unofficial one from Z3 Dev section) and then restored my backup from before.
TWRP works fine as well as my rom

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