[Q] ICS Bootloader on JB 4.1.2 Rom - Galaxy S III Q&A, Help & Troubleshooting

Can i install a 4.1.2 Rom without bootloader over a ICS Rom so i keep the ICS bootloader, or ICS bootloaders don't work on JB 4.1.2?

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[Q] ICS Upgrade

I just downloaded the ICS version to Latm 672.180.350 and rooted the phone.
Can I flash any ics custom rom over this version
Do I have to upgrade to .211 to do it
Thanks

[Q] Dual booting ICS when on jb leaked rom

I have a droid razr that was updated to the Leaked JB OTA Rom when it was leaked. And was wondering If I can dual boot ICS with the same methods when your on ICS dual booting JB OTA Rom. My Droid razr xt912 with 4.1.2 is rooted and has Safestrap JB 3.11. I read in another post that you can fastboot a JB kernal on slot 1 and install the OTA update with out messing with the ICS kernal. I was wondering if I can do the same when on JB OTA Rom to dual boot ICS. I will post the link were it tell you how to do it when your on ICS but I want to know if I can do it on JB OTA Rooted?
droidrzr.com/index.php/topic/6174-jb-dual-boot-xt912/page_st_60_p_156794#entry156794

[Q] Flashing custom ics rom over stock 2.3

Hey,
I have xperia ray, Im on stock 2.3 with unlocked bootloader, can i flash custom ics kernel over stock and then install ics rom or first i need to upgrade to stock ics?
Flash a stock ftf first then flash ICS ROMS, and if you're going back to GB flash a GB ftf.
thanks

[Q] stock ics rom for HTC_038

recently updated to JB but do not like so can i use thishttp://androidfiles.org/ruu/getdownload.php?file=Proto/ruu_proto_u_ics_40a_htc_asia_wwe_1.14.707.1_radio_10.18.40.05u_1.09.45.201_release_284720_signed.exe to downgrade from JB to ICS plus how it can be done or make it work i mean to downgrade from JB to ICS
sorry mistake it is RUU not rom

Installing stock firmware over custom ROM

Hi all i am using CyanogenMod ROM version 10.2. I want to go back to Jelly bean 4.1.2. Wanted to know if it would be possible to flash the 4.1.2 jelly bean stock firmware over a the custom ROM. What I mean is, would it be possible since what I am installing is a stock firmware and not a ROM. Thanks

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