Help Me Understand Android Build Numbers

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oldblue910

oldblue910

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Jan 1, 2011
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OK I know they mean something...let's examine Gingerbread, Honeycomb, and ICS...

GRH55
HLK75H
ICL53F

Obviously the first letter is indicative of the Android code name (Gingerbread, Honeycomb, ICS, etc.).

What does the rest of it mean?
 
adrynalyne

adrynalyne

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Dec 13, 2008
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oldblue910 said:
OK I know they mean something...let's examine Gingerbread, Honeycomb, and ICS...

GRH55
HLK75H
ICL53F

Obviously the first letter is indicative of the Android code name (Gingerbread, Honeycomb, ICS, etc.).

What does the rest of it mean?
Click to expand...
Click to collapse

I am a little rusty, but:

First letter is Android OS version name.
Second letter is month code ?
Third letter is year code. L was 2011, M is 2012.
The fourth and fifth number is the main build number, and the last letter is the variant of the main build number. IMM76D, IMM76I, and IMM76K are all the same main build with slight variations.

I might be slightly off.
 
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efrant

efrant

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oldblue910 said:
All I could find on Android.com is what build goes with what version and API level. That's not what I'm interested in. I want the build number dissected to know exactly what it means.

Adrynalyne took care of it. :D
Click to expand...
Click to collapse
Adrynalyne is close, but not exactly right. :)

First letter = release family, e.g. F is Froyo
Second letter = branch code that allows Google to identify the exact code branch that the build was made from, and R is by convention the primary release branch
Third letter and the two numbers = date code. The letter counts quarters, with A being Q1 2009. Therefore, F is Q2 2010. The two digits count days within the quarter, so F85 is June 24 2010.
Last letter = individual versions related to the same date code, sequentially starting with A; A is actually implicit and usually omitted for brevity.

Source: http://source.android.com/source/build-numbers.html
 
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oldblue910

oldblue910

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efrant said:
Adrynalyne is close, but not exactly right. :)

First letter = release family, e.g. F is Froyo
Second letter = branch code that allows Google to identify the exact code branch that the build was made from, and R is by convention the primary release branch
Third letter and the two numbers = date code. The letter counts quarters, with A being Q1 2009. Therefore, F is Q2 2010. The two digits count days within the quarter, so F85 is June 24 2010.
Last letter = individual versions related to the same date code, sequentially starting with A; A is actually implicit and usually omitted for brevity.

Source: http://source.android.com/source/build-numbers.html
Click to expand...
Click to collapse

I guess I should have read a little better. Thanks! :)

Do we have any idea what the other "second letters" mean? In addition to the "R" release branch, I've seen C, L, M, P, S, T, and W.
 
Last edited:
tigran-s

tigran-s

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Can anybody help to understand what does this one means?

Build number 1.17.1010.1 CL217236 release-keys
 
Last edited:
karasuhebi

karasuhebi

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Apr 29, 2010
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efrant said:
Adrynalyne is close, but not exactly right. :)

First letter = release family, e.g. F is Froyo
Second letter = branch code that allows Google to identify the exact code branch that the build was made from, and R is by convention the primary release branch
Third letter and the two numbers = date code. The letter counts quarters, with A being Q1 2009. Therefore, F is Q2 2010. The two digits count days within the quarter, so F85 is June 24 2010.
Last letter = individual versions related to the same date code, sequentially starting with A; A is actually implicit and usually omitted for brevity.

Source: http://source.android.com/source/build-numbers.html
Click to expand...
Click to collapse

Sorry to ask this here, since this is a thread on the Gnex forum but....what about the rest of the numbers Samsung uses on it's (probably TouchWiz-based, not AOSP-based) devices' build numbers? When I go to "About Phone" on my ET4G running the latest Sprint OTA (4.0.4), it's build number is IMM76I.FH13

From what I've seen, that last set of digits indicates either the kernel, modem or ROM. Not sure which of the three though since, as you can see, I'm currently running FH13 which from what I understand just so happens to be a build number that this specific set of ROM, kernel AND modem all share lol. I know there's a new kernel/modem combo that is FI03, so maybe I'll try updating to that to see if it brings up the build number on "About Phone" to IMM76I.FI03. If it doesn't, then I'll know that last string of numbers is probably indicative of the ROM's build.

But hey, maybe I'm completely wrong! Does anyone really know what the last set of digits of the build number on Samsung devices means?
 
efrant

efrant

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karasuhebi said:
Sorry to ask this here, since this is a thread on the Gnex forum but....what about the rest of the numbers Samsung uses on it's (probably TouchWiz-based, not AOSP-based) devices' build numbers? When I go to "About Phone" on my ET4G running the latest Sprint OTA (4.0.4), it's build number is IMM76I.FH13

From what I've seen, that last set of digits indicates either the kernel, modem or ROM. Not sure which of the three though since, as you can see, I'm currently running FH13 which from what I understand just so happens to be a build number that this specific set of ROM, kernel AND modem all share lol. I know there's a new kernel/modem combo that is FI03, so maybe I'll try updating to that to see if it brings up the build number on "About Phone" to IMM76I.FI03. If it doesn't, then I'll know that last string of numbers is probably indicative of the ROM's build.

But hey, maybe I'm completely wrong! Does anyone really know what the last set of digits of the build number on Samsung devices means?
Click to expand...
Click to collapse
Not entirely sure, but I would hazard a guess that it denotes a combination of the modem and ROM build, at least that is what it is on GNex devices running a Samsung build.
 
karasuhebi

karasuhebi

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Oh okay so it uses those extra build numbers on AOSP-based devices as well? Good to know, thanks! :)

So you can confirm those extra digits it's showing on the build number are not related to the kernel? It's either the ROM or the modem?
 
efrant

efrant

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karasuhebi said:
Oh okay so it uses those extra build numbers on AOSP-based devices as well? Good to know, thanks! :)

So you can confirm those extra digits it's showing on the build number are not related to the kernel? It's either the ROM or the modem?
Click to expand...
Click to collapse
As I mentioned, those extra digits only appear on NON-Google builds -- they do not appear on Google-compiled ROMs. And yes, for the GNex, if running a Samsung build, those numbers have nothing to do with the kernel.
 
karasuhebi

karasuhebi

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efrant said:
As I mentioned, those extra digits only appear on NON-Google builds -- they do not appear on Google-compiled ROMs. And yes, for the GNex, if running a Samsung build, those numbers have nothing to do with the kernel.
Click to expand...
Click to collapse

Sorry, I meant to say AOSP-based Samsung devices (running stock Samsung ROMs, of course). But ok cool, good to know it doesn't have to do with the kernel. It has to be the modem's build number then...but I will confirm when I flash the latest modem, which is FI03. If I check my build number after I do that and it's IMM76I.FI03, then I'll know for sure. If it stays as IMM76I.FH16 after the flash, then I'll know the extra digits on the build number indicate the ROMs build.

Thanks again for the help! :)
 
B

boydee

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Oct 14, 2012
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FROYO BUILD :eek:

:eek::eek::eek::eek::eek:
Hey guys, I was wondering If I could get some help identifying what this build means,

FROYO.JVJPF

It's on a Samsung Galaxy S [I9000]
My AIM is to identify what the JVJPF stands for. Is it the CSC, PHONE, or PDA value?? Or none???
:eek: :D:D:D:D
 
oldblue910

oldblue910

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boydee said:
:eek::eek::eek::eek::eek:
Hey guys, I was wondering If I could get some help identifying what this build means,

FROYO.JVJPF

It's on a Samsung Galaxy S [I9000]
My AIM is to identify what the JVJPF stands for. Is it the CSC, PHONE, or PDA value?? Or none???
:eek: :D:D:D:D
Click to expand...
Click to collapse

If it were a modern Samsung device, that would most certainly denote the PDA. The I9000 is what? 3 years old now? I can't say for sure that it's the PDA, but JVJPF would translate to a date that certainly jives with the lifetime of the I9000. Great device, BTW.

Sent from my Nexus 7 using Tapatalk 4
 
Last edited:
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boydee

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Cool!

oldblue910 said:
If it were a modern Samsung device, that would most certainly denote the PDA. The I9000 is what? 3 years old now? I can't say for sure that it's the PDA, but JVJPF would translate to a date that certainly jives with the lifetime of the I9000. Great device, BTW.

Sent from my Nexus 7 using Tapatalk 4
Click to expand...
Click to collapse

Thanks for the [lightning-fast] response. In my country, everyone is asleep right now, so you can imagine the shock when I got an email alert :laugh::laugh::laugh:
I'm planning to upgrade the SGS but I've already only downloaded the Odin package zip. I was wondering if there was a way of predicting what the build will show AFTER I flash the phone BEFORE I actually flash it, so I can download the [most]correct CF-Root to flash it with after the update.

PS: I don't have the phone on me right now :angel:
 
oldblue910

oldblue910

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Jan 1, 2011
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Durham, NC
boydee said:
Thanks for the [lightning-fast] response. In my country, everyone is asleep right now, so you can imagine the shock when I got an email alert :laugh::laugh::laugh:
I'm planning to upgrade the SGS but I've already only downloaded the Odin package zip. I was wondering if there was a way of predicting what the build will show AFTER I flash the phone BEFORE I actually flash it, so I can download the [most]correct CF-Root to flash it with after the update.

PS: I don't have the phone on me right now :angel:
Click to expand...
Click to collapse

I can't help you there, unfortunately. I know nothing at all about flashing firmware to the I9000. :(

Good luck, though!

Sent from my Nexus 7 using Tapatalk 4
 
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    efrant
    efrant
    oldblue910 said:
    All I could find on Android.com is what build goes with what version and API level. That's not what I'm interested in. I want the build number dissected to know exactly what it means.

    Adrynalyne took care of it. :D
    Click to expand...
    Click to collapse
    Adrynalyne is close, but not exactly right. :)

    First letter = release family, e.g. F is Froyo
    Second letter = branch code that allows Google to identify the exact code branch that the build was made from, and R is by convention the primary release branch
    Third letter and the two numbers = date code. The letter counts quarters, with A being Q1 2009. Therefore, F is Q2 2010. The two digits count days within the quarter, so F85 is June 24 2010.
    Last letter = individual versions related to the same date code, sequentially starting with A; A is actually implicit and usually omitted for brevity.

    Source: http://source.android.com/source/build-numbers.html
    View
    1
    adrynalyne
    adrynalyne
    oldblue910 said:
    OK I know they mean something...let's examine Gingerbread, Honeycomb, and ICS...

    GRH55
    HLK75H
    ICL53F

    Obviously the first letter is indicative of the Android code name (Gingerbread, Honeycomb, ICS, etc.).

    What does the rest of it mean?
    Click to expand...
    Click to collapse

    I am a little rusty, but:

    First letter is Android OS version name.
    Second letter is month code ?
    Third letter is year code. L was 2011, M is 2012.
    The fourth and fifth number is the main build number, and the last letter is the variant of the main build number. IMM76D, IMM76I, and IMM76K are all the same main build with slight variations.

    I might be slightly off.
    View
    1
    martonikaj
    martonikaj
    tigran-s said:
    Can anybody help to understand what does this one means?
    i have a HTC Desire

    Build number 1.17.1010.1 CL217236 release-keys
    Click to expand...
    Click to collapse

    HTC probably isn't following the same naming convention as Google does for AOSP releases...
    View
    1
    oldblue910
    oldblue910
    boydee said:
    :eek::eek::eek::eek::eek:
    Hey guys, I was wondering If I could get some help identifying what this build means,

    FROYO.JVJPF

    It's on a Samsung Galaxy S [I9000]
    My AIM is to identify what the JVJPF stands for. Is it the CSC, PHONE, or PDA value?? Or none???
    :eek: :D:D:D:D
    Click to expand...
    Click to collapse

    If it were a modern Samsung device, that would most certainly denote the PDA. The I9000 is what? 3 years old now? I can't say for sure that it's the PDA, but JVJPF would translate to a date that certainly jives with the lifetime of the I9000. Great device, BTW.

    Sent from my Nexus 7 using Tapatalk 4
    View

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