Galaxy S III’s latest software update fixes Exynos security exploit & Sudden Death Issue

On 2nd January, Samsung pushed a software update (I9300XXELLA) to the Galaxy S III and we can confirm that the new software update fixes the infamous Exynos 4 vulnerability. The security flaw was in the kernel which made the device R/W by all users, apps and gave access to full Physical Memory. In short, this vulnerability gave root permissions to *any* app and there was no control over it but now with the new system update the security hole has been patched.

We believe that the new system update also fixes the sudden death issue as the new firmware ships with brand new bootloaders and this is the first time Samsung has updated the bootloaders of the device since it started shipping back in May 2012. But, we can’t confirm if sudden death issue has been resolved or not as Samsung is the only one who can confirm about the fix.

For now the new software update is only available for the United kingdom (BTU) but we expect other countries to follow soon. We would urge Galaxy S III users to  immediatly update their device to the latest firmware via Kies or OTA (Over-The-Air).

Official Firmware Details:
Android Version: 4.1.2 – Build JZO54K
Build Date: 22-12-12
Change list: 742798


SamMobile research, via, via

UPDATE: Our sources confirm that Samsung has fixed the sudden death issue with the latest Galaxy S III Software Update.

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jules figgs65
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I have a SIII mini GT-I8190L I want to know it works too?

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3 years 9 months ago

Hi dear friends ..
Please help me ..
I have decided to buy the News of the shutdowns, but that board ruin the phone and I heard it was true?
Is the problem solved by replacing the ROM or hardware fault is?

3 years 10 months ago

Hi, I flashed my S3 I9300 because the sadden death. After that my S3 still it´s in danger, at least that say the EMMC brick. Somebody can help me? i don´t know what to do. I don´t wanna lose my S3.

P.S.: Android versión 4.1.2 – baseband versión XXELLA – compilation number: JZO54K.I9300XXELLC. THANKS IN ADVANCE!

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4 years 3 months ago

download link ?

4 years 3 months ago

waiting for 4.2 on my S3

4 years 3 months ago

im really worry about it i recibe jelly bean 4.1.2 via ota in usa. but the update is BELL1, they send my in january but the deal is, how they send me a update that dont fix the problem??? i dont understand.

4 years 4 months ago

Ah….. So now I know, after 6 months of having the phone. Pity my phone is now dead too…. on Saturday morning(12th Jan 2012). Lost all my data and everything. Also happened a month ago to a friend of mine and he had had his phone for a month!!!

Looks like a serious issue for those who don’t often update due to data restrictions and no wifi to download.

4 years 4 months ago

Is samsung going to fixed rhe exploit problem with Note 2, if yes when is it going to be released?

4 years 4 months ago

My phone is dead now. Can it be recovered? Will samsung fix/replace my phone?

4 years 4 months ago

after update to XXELLA I have problem with charging my phone, IMHO something is wrong with them…very long charging Let me know if somebody have the same problem and how to fix this ?

4 years 4 months ago

I’m on XXELLA (BTU) right now. it has certainly fixed the exynos mem abuse bug (I checked using chainfire way). But for sudden death, it seems ssamsung have aired another fix. anyone know how to get this new fix ??? or how samsung are going to proceed?

4 years 4 months ago

Mine is from Saudi Arabia Got 4.1.2 on monday and today got another minor update with 31mb of size. Todays updates got XXELLA baseband version. I think sudden death has been fix with this. Thanks Samsung for this. I can tell this is the smoothest firmware of all time sinc invent of S3

4 years 4 months ago

I appreciate your work in this regard and I will always follow you yet on the last update to fix Exynos vulnerability, why some Google Play applications as “Norton Halt Exploit Defender” and “Exynos Mem Bug Checker” show the vulnerability is still there ?
Does this update we are talking really fix the bug of Exynos ?