Currently running Android 4.4.3. I have TWRP installed. To upgrade can I just flash system.img and radio.img within TWRP? I believe that this is how I upgraded from 4.4.2 to 4.4.3 but my memory is hazy and this was before I installed a custom kernel. I'm not sure on whether I need to do anything additional such as rolling back to stock 4.4.3 before upgrading to 4.4.4. I've seen people discuss this but I think that's just if one wants to run the OTA update.
[Q] Upgrading Nexus 5 rooted with custom kernel to 4.4.4?
- Thread starter prnz
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you can. or you can just dirty flash(no wiping) a stock rooted rom from the android development section, and your kernel, and reboot 
Thanks. Is there any way to do it from recovery? I hate having to hook up the USB cable, etc.
Also, this seems a lot easier than what is suggested here (Special Scenario #1) http://xdaforums.com/google-nexus-5/general/info-nexus-5-ota-help-desk-t2523217
Seems to me like people go to a lot of extra work installing the OTA instead of the factory images.
extra work is done in both those methods. just dirty flash a precompiled rooted stock rom and your kernel. itll take seconds to a minute, and you wont lose anything. and you do that in recovery.
Not to create a flamewar but I'm too afraid of security issues to install a pre-rooted ROM.
have you ever seen or heard(a real one, not just "stories") of a security issue?
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The ones on XDA are safe. Just as safe as you rooting your stock ROM.
Sent from my Nexus 5 using Tapatalk
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extra work is done in both those methods. just dirty flash a precompiled rooted stock rom and your kernel. itll take seconds to a minute, and you wont lose anything. and you do that in recovery.
