[Q] Fastboot files - Nexus 10 General

Can anyone give me fast boot files of android version 4.2.1 so that after flashing the files I can update it to 4.2.2 because I am not able to update my device to android 4.2.1.
Before that I was running Cm10.1 and then I flashed stock image and I am not able to update it to 4.2.1

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[Q] S3 cannot reboot after install a older version of stock rom?

I update my s3 to android 4.1.1 yesterday. Then I saw a leaked rom android 4.1.2 in sammobile today. I installed it and found out that it has a lot of bugs. I tried to install android 4.1.1 back and after install, my phone cannot boot. What should I do?
One more thing, I can stall android 4.1.2 (the leaked rom) and can reboot. But I cannot reboot after I install android 4.1.1 rom.
try a factory reset
Thx. I fix it. :good::good::good::good:

[Q] CoreX4 New ROM 4.2.2 JB

My tablet is rooted and is running ICS 4.1. I want to upgrade to JB 4.2.2 which I downloaded. But all attempts fail - has it got anything to do with it being ROOTED. Is there a simple way to UN-ROOT
Thanks
SB

[Q] Problem downgrade from 4.4 to any version

Hello to all, this is my first post and thread, I hope everyone is ok.
Well just yesterday I updated my samsung s3 to a kitkat 4.4, it is a custom version and I do not like it and decided to downgrade it to a 4.1.2, but I have tried several times and I cannot do it
I have used, odin 3.07 and 3.09, lastest version of twrp and cwm recovery and nothing, the twrp log file is attached.
I will appreciate some help, I can only install the 4.4 kitkat but I want to go back to any version, I have 4.1.2, 4.2.2 and 4.3 and none of them work.
up

[Q] Updating from ICS 4.0.4 to Jellybean 4.3

I was wondering If it is safe to flash a 4.3 stock Firmware via odin on my I9300 4.0.4 device.It's baseband version is I9300XXLH1 which hasn't recieved any OTA updates so I'm going to flash one via odin.And I also wanted to know if any fullwipes will be needed after flashing new firmware cause for my I9500 which I flashed a 4.3 firmware on a 4.2 one I needed a fullwipe in order to fully boot the device...

I cannot install any app in my phone

I had android jelly beans installed in my phone and I wanted to try the newest version of android so I updated my phone to android 5.0.1 but I did not like it so I tried to downgrade my phone back to version 4.2.2
I searched the internet for how to downgrade my phone.I found that I have to download the stock ROM for the version that I want to downgrade to.I downloaded the stock ROM for android jelly beans the exact version That was installed in my phone before I updated it.But when I flashed my phone with this ROM, the phone just hang at Samsung logo.So I downloaded the ROM for android kitkat a more updated version. It worked however now I cannot install any app in the phone.When I try to install from the cmd it returns INSTALL_FAILED_DEXOPT .And when I try to install from google play it returns "Tty again ,and if the problem continues ,get help troubleshooting.(Error code:-24)"

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