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Comparison of Different HSUPA i9000 Modems in Captivate

Hi everyone -
I'd like to know the difference between each HSUPA i9000 modem that has been tested in the Captivate
I think it would be good to know what the strengths are, when / where it first emerged, and known issues with it.
If you post below I can keep this updated.
I'll start:
JG8 - i9000 Eclair ROM. Works for enabling 850 band for those launching a reorientated kernel. Do not use with Froyo.
JPP - i9000 Froyo ROM.
General principles:
- don't mix an i9000 modem with a cappy kernel or visa versa
Known issues with using an i9000 modem:
-bluetooth voice quality
-wired headsets don't work on mic
thanks all!

bump, i was just gonna ask the same question

The problem with asking questions like this in the Q&A section is that all the developers that can answer it well hang out in the Android development section and never come over here
And people wonder why there is so much spam in that thread.
C'mon guys, help me out, and lets prove that we don't have to start technical question threads in Android development in order to get an answer.
Sent from my GT-I9000 using XDA App

Can some1 tell me which taste batter? Orange or lemon?
Try it yourself znd u will know!

yeah real helpful. is there any difference in frequency support? can bluetooth work corectly along side hsupa yet?
which is the most recent? jg8, jpp, jpm? does one need to be installed before the other? are there any other known problems? battery drain? instability? ect?
someone must know

netnerd said:
Can some1 tell me which taste batter? Orange or lemon?
Try it yourself znd u will know!
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Haha funny! I thought of doing that myself but the problem with n=1 is that all you guys would get spammed with my own quirks. Hence why I didn't add the point about JG8 FC'ing on me under JG8- most people haven't said that - so I just have a weird bug with my location/hardware/who knows what. I'd kinda be spreading disinformation if I put it down as "truth"
Anyways, anything that anyone wants to contribute I'd be more than happy to include. I think it would be helpful. THanks.

fatttire said:
Hi everyone -
I'd like to know the difference between each HSUPA i9000 modem that has been tested in the Captivate
I think it would be good to know what the strengths are, when / where it first emerged, and known issues with it.
If you post below I can keep this updated.
I'll start:
JG8 - ???????
JPP - ???????
As you can see, I have no idea which one I should choose. This information is embedded within 1000's of pages of material and a good 30 minutes to an hour of reading didn't get me anywhere useful.
I had issues with JG8 FC'ing. Obviously not the case for everyone but in my circumstance I'm looking to try an alternative.
thanks all!
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Well the one problem I find with every HSUPA modem is the Bluetooth quality sucks...Since Bluetooth is more important for me I don't use them anymore...Upload speeds are nice but I don't really need it...

Bump
Sent from my SAMSUNG-SGH-I897 using XDA App

[Q] What is the best Captivate ROM?

Which ROM is the best for the Captivate?
I have been running Assonance 5.2 since I rooted, but have recently been looking for something more. I have heard good things about Paragon and di11is ROM. I need full GPS functionality so ROMs without it are a dealbreaker.
Let the discussion begin.

I personally like darky's a lot. The most recent versions have added easier support for the captivate but may still need some work to get working. I love it though.

http://forum.xda-developers.com/showthread.php?t=919816

Andromeda seems to be the overall top at the moment. I know we're supposed to say "its preference" but no bull**** its the most stable rom and the quickest.
Sent from recent

I'm aware of the FAQ, I've flashed ROMs, and unbricked my phone. Just trying to stimulate a lively discussion.

wmbenham said:
Just trying to stimulate a flame war.
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Fixed that for you, seriously just try them all based on what theme you like and what kernel features you need.

They all are good, some are better, all have bugs. Anyone who says other wise is lying to themselves

I really like serendipity. fast, stable, awesome.

ive tried cezars, cognition, and firefly out of those i liked cognition out of the box but loved firefly after some tweaks i think if u want stable go with one of the rogers 2.2 based roms

peachpuff said:
Fixed that for you, seriously just try them all based on what theme you like and what kernel features you need.
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99% of the time no one starts a flame war except the people flaming the person who started the 'flame war'. Honestly though it is preference (although some ROMs are better then others stability wise)

praramis said:
ive tried cezars, cognition, and firefly out of those i liked cognition out of the box but loved firefly after some tweaks i think if u want stable go with one of the rogers 2.2 based roms
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I've found the same, big fan of Firefly right now, I used the firebird kernal with ADW launcher. It's about the best my phone has ever run.
The reality is that they all work a bit different on different phones, your going to have to experiment with a few to find the one that makes your phone happy. I understand how this seems strange, they should all be identical ( it's the same hardware right? ) but it's not so, for some reason they behave differently.
Good luck finding the combo for yours.

Check my signature. Results speak!

I've been using Darky's on my Captivate, and it's been running amazing so far.

How come no one mentioned Pheonix rising?! I've tried cognition but this seems better stable and fast. And With the GO launcher my life has really changed.
Sent from my SGH-I897 using XDA App

Andromeda is really great. Can't say enough about it. turned my cappy into what I thought it would be when I bought it.

Yeah I'm a big Andromeda fan too. I also like Perception with the latest Speedmod kernel. I was running Paragon RC3 and got amazing battery life from it but overall it was kind of choppy and not as smooth as Andro and Perception/Speedmod. If I was going on a long trip I would flash Paragon and pop in my 3000mA battery. But as my daily driver I like Perception and Andromeda.

Keep coming back to Cognition 3.02. Just flashed Firebird Kernel because I wanted to enable HSUPA and Voodoo Sound. Went though I9000 JL3, JK4, and JK3 modems. In call volume on most I9000 modems are pretty low, but that can be fixed. However, I was having GPS problems with every modem I flashed, BUT, I came across the KP1 modem and it's working very well. Good call volume without tweaks, GPS lock in 10 to 15 seconds (within 10 to 15 meters accuracy), and solid upload/download (~1500 - 1700 kbps download / ~12000 kbps upload)
My phone really doesn't seem to like I9000 ROMS, though, and I've tried mostly all of them. Serendipity seemed to run the smoothest, but I didn't get good GPS performance so I went back to Cog 3.02, but that was before I came across the KP1 modem. I'll probably give Serendipity another try with the KP1 modem before too long.
Just like everyone says, it's all up to personal preference. I've had my Captivate for six weeks or so, and I'm starting to find out that the ROMs offered by the great developers who post on XDA are fantastic in and of themselves, but they can also be great starting points for you to find out what works on your personal device. Different kernels which support certain lagfixes, video and sound enhancements, and different modems are available so that each individual can find out what combination of ROM/Kernel/Modem works for them.

I haven't had my Captivate very long but I've flashed Cognition, Andromeda, and Serendipity already. The best so far for me in speed stability and appearance has been Serendipity. Just my opinion as everyones Captivate is different.

Serendipity bar none!!!

>>In call volume on most I9000 modems are pretty low, but that can be fixed.
How? By switching to a different modem, or what?
It would be nice if there were a chart that listed modems and kernals, showing the features in each and their compatibility with each other.
MexicanAmerican said:
Keep coming back to Cognition 3.02. Just flashed Firebird Kernel because I wanted to enable HSUPA and Voodoo Sound. Went though I9000 JL3, JK4, and JK3 modems. In call volume on most I9000 modems are pretty low, but that can be fixed. However, I was having GPS problems with every modem I flashed, BUT, I came across the KP1 modem and it's working very well. Good call volume without tweaks, GPS lock in 10 to 15 seconds (within 10 to 15 meters accuracy), and solid upload/download (~1500 - 1700 kbps download / ~12000 kbps upload)
My phone really doesn't seem to like I9000 ROMS, though, and I've tried mostly all of them. Serendipity seemed to run the smoothest, but I didn't get good GPS performance so I went back to Cog 3.02, but that was before I came across the KP1 modem. I'll probably give Serendipity another try with the KP1 modem before too long.
Just like everyone says, it's all up to personal preference. I've had my Captivate for six weeks or so, and I'm starting to find out that the ROMs offered by the great developers who post on XDA are fantastic in and of themselves, but they can also be great starting points for you to find out what works on your personal device. Different kernels which support certain lagfixes, video and sound enhancements, and different modems are available so that each individual can find out what combination of ROM/Kernel/Modem works for them.
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Mod please delete. Thank you.

Old

good to know, i am using that rom too. you can try speedmod kernel also, for the modem, it needs to be i9000 compatible.

I have success with both firebird kernal and speedmod kernel with the kp1 modem and the jk4 modem. You could tries these modems and see if they work for you. Not every modem will work the same for every phone in any location. You will just have to keep trying them out until you find one that works for you

well about every modem ive tried. aka or rom. works. just the poor call quality or slow network speeds. i tried speedmod last night. no go on ji6. whats wierd is on cognition or the leaked 2.2 froyo they work perfect on ji6. no matter the kernel. which i tried speed mod. glitterballs .4. so ill go out and find an i9000 kernel.

I am running dill's 6.0 with kp1 modem, 2 days now heavy phone use talking, texting, browsing and downloading. Absolutely no connection issues with kp1 at all so far. No voice quality issues either.

miketucky350 said:
hi everyone. I have a captivate. live in america. Well i have had slow network speeds with jk4 jk3. jl1 jl2 plus poor call quality on the other end. ect. but the stock jh7. and the froyo leaked ji6 modems kick ass where im at. it even relialably plays youtube while on on the edge network.
Ive come down to di11is roms are the fastest. smoothest and the BEST gps. no bugs. has any one tried that modem on those roms? ie 6.0 . well i use that modem on some other roms and i know you need a matching kernel. so i flashed kernel then modem. still boot loops. anyone found a combo that works? is there a voodoo sound/lagfix kernel that works with this rom/modem. on cognition 3.04 i used .v4 gb kernel/ji6. and worked great. just have much love for di11is roms
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If you read around, the pattern for modems is location based. It seems some modems work better in areas that other modems bomb out. I am going to take a chance and say you are in Kentucky if I read your user name correctly. It is helpful to others when talking about the modem that works best for you to be a little more specific then "I live in America". America can mean many different countries. (unfortunately in todays world climate it really only means one place)
Sorry just a pet peeve of mine.
For me in central florida jl2 has been the best. I will test ji6 to see how it goes for me. Hopefully it will become a preferred modem.
Again I am not trying to be a troll, sorry if it sounds like it.

phlunkie said:
If you read around, the pattern for modems is location based. It seems some modems work better in areas that other modems bomb out. I am going to take a chance and say you are in Kentucky if I read your user name correctly. It is helpful to others when talking about the modem that works best for you to be a little more specific then "I live in America". America can mean many different countries. (unfortunately in todays world climate it really only means one place)
Sorry just a pet peeve of mine.
For me in central florida jl2 has been the best. I will test ji6 to see how it goes for me. Hopefully it will become a preferred modem.
Again I am not trying to be a troll, sorry if it sounds like it.
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I don't understand that at all..... the only real difference is if the area covered is 850/1900 or 1900 only..... otherwise how can there be a difference?

shoman94 said:
I don't understand that at all..... the only real difference is if the area covered is 850/1900 or 1900 only..... otherwise how can there be a difference?
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I do not disagree with what you say. But reading around there are very similar findings in specific areas. I will look for the threads in the morning. Nyquil kicking in.

im auctually from indiana. sorry for putting up america. At first this modem stuff didnt make sense. How 5 different modems will have 5 bars but each one has different results. would be nice if it was like a pc. windows or linux or mac. where if the drivers installed they just work. Its just such a deal breaker when i get to work and the net is just slow even with 5 bars. (jl1 jl2. jk3 jk4) but with ji6 it works great. and speed test are wayy higher. am now checking out deviant roms. found i9000 with voodoo and ji6. hmm might be able to get di11is working with ji6 here in a minute!

well tried firebird 2.0. tried few other kernals no luck. i flashed kernal first. then modem. no luck. firebird says works will all modems. ive tried. both 959 vibrant ji6 and ucji6 cappy modem. same result. sends it to boot loop. its something easy. is it because its a i9000 based rom? cog 3.04 it works with all those kernals ive tried on dillis

[Q] Which ROM is right for me?

There are a ton of ROMS out there for the Captivate and I've tried quite a few of them. However, I'm not sure what the differences are or which one is right for me.
I've heard of:
Cognition, Perception (by Designgears)
FireFly, Phoenix (seems like these are by the same person)
Serendipity
I haven't tried Serendipity or Perception, but I've tried the others I listed. Various ROMS say they are based off of KB1 and JP6 (I probably have these wrong) as well as various other 3-letter names. I'm not really sure what these mean, but I think they relate to the ROM being based off of Android v2.1 or Android v2.2.
Here are a couple of things I'm looking for in a ROM:
Battery life is important to me. Most roms so far have been very good at this so long as I change the Wifi sleep policy to "Only when plugged in". If WIFI is on permanently, my battery life is crap.
I prefer a good theme. FireFly's theme is pretty good. It looks great and has nice window animations.
Must be at least Android v2.2. Gingerbread would be awesome but not a requirement.
Stability. Specifically, all phone/hardware features need to work and there should be minimal bugs. For example, using CM7 for Captivate at this point would be out of the question since it's still so young and I've heard it is unstable/buggy.
Based on what I've tried and my requirements, Cognition probably isn't going to be an option. The last time I used Cognition (when it was v3), it wasn't themed and was just an optimized version of stock.
Firefly, Phoenix and Serendipity all seem to be the same thing but with a slightly varied theme. I'm most confused by this. What are the differences here? If there are technical differences, I'd like to know those too. I think each are based off of different firmwares, right?
Thanks in advance for any guidance.

I am sorry but you really need to try them and seed what works best for you
Sent from my Captivate using XDA Premium App

mcord11758 said:
I am sorry but you really need to try them and seed what works best for you
Sent from my Captivate using XDA Premium App
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This is not helpful at all. This is what I've been doing.
I need someone to go over the technical differences between my choices, since I don't fully understand them myself. I have yet to find a guide somewhere that talks about the technical differences between all of them.
Can someone else provide some helpful input?

void.pointer said:
This is not helpful at all. This is what I've been doing.
I need someone to go over the technical differences between my choices, since I don't fully understand them myself. I have yet to find a guide somewhere that talks about the technical differences between all of them.
Can someone else provide some helpful input?
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Click to collapse
The best place to find any info abt any ROM/kernel would its OP. Try looking there.
Plus there won't be so much use of anyone compiling the differences 'cos a new version would be out every now n then. This is one of the reasons why there is no such thing.
Rather than asking for something generic like this, u could ask more specific questions like say. That way u wud get ur answers sooner.
mcord11758 said:
I am sorry but you really need to try them and seed what works best for you
Sent from my Captivate using XDA Premium App
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I am with this. Cos a kernel that works on mine might not give the same results on urs.
void.pointer said:
Here are a couple of things I'm looking for in a ROM:
Battery life is important to me. Most roms so far have been very good at this so long as I change the Wifi sleep policy to "Only when plugged in". If WIFI is on permanently, my battery life is crap.
I prefer a good theme. FireFly's theme is pretty good. It looks great and has nice window animations.
Must be at least Android v2.2. Gingerbread would be awesome but not a requirement.
Stability. Specifically, all phone/hardware features need to work and there should be minimal bugs. For example, using CM7 for Captivate at this point would be out of the question since it's still so young and I've heard it is unstable/buggy.
Thanks in advance for any guidance.
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1. wifi always has phone searching for it all time the screen is on. So keep it in when screen turns off, or the option u selected.
2. Themes are personal choices. Based on the ROM u choose, u can select theme of ur choice, or make a theme urself. There are guidelines posted.
3. Most ROMs now are 2.2.1. Would be mentioned in the OP.
4. Custom ROMs cannot guarantee that. Devs take all care and iron out issues when they find or when someone tells them abt them.
Check out a few ROMs and settle for one that suits u. And if u plan on putting on custom ROMs, don't bother on keeping ur hands clean. I think I flashed more than a dozen different ROMs before settling for what I am on now. And since I now found what suits me best, been sticking to it.
This is the normal process most people follow here.

void.pointer said:
This is not helpful at all. This is what I've been doing.
I need someone to go over the technical differences between my choices, since I don't fully understand them myself. I have yet to find a guide somewhere that talks about the technical differences between all of them.
Can someone else provide some helpful input?
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Click to collapse
Unfortunately, mcord11758 and diablo009 are right.
The differences are minimal, and you need to research each ROM. The very basics are.
MOST roms right now are running Froyo 2.2.1. Some are still 2.2. The JPY, JS3, JS5, KB1(Stock 2.2) Are, for lack of a better definition, are build numbers.
What you'll need to do is, quite frankly, read up on one that has your interest, flash it and if it doesnt work well for you try another. Each Captivate may respond to a ROM differently to the ROM/Kernel/Modem combination. So you literally have to try it

[Q] Increasing in call volume?

As the title says, how do I do this? (is it possible). I'm currently on serendipity 7 and I love the rom. Problem I have is the same prob I have with all GB roms, and most I9000 roms, (I'm an I897), call quality. Through trial and error I have found that jl2 and jl3 modems offer the best quality for myself and the people I am speaking with, however I would really like to increase the volume in my earpiece. It's ok, but it's a lot lower than any kb1 I've used. I have the volume all the way up, and sometimes it's a struggle to hear the person I am speaking with. I have sgs tools and I've investigated in the volume controls of the audio section. Problem is there are so many options for tweaking and I don't want to just go in and start increasing numbers that I don't know what they're for. Any guidance on which numbers I should increase to hopefully solve this issue? Also, galaxy tuner gives me issues, mostly just not working, so I don't think this is an option. Any advice would be greatly appreciated. And yes, I searched this before posting, and didn't find what I was looking for.

There's a Serendipity sticky in this forum for exactly these kinds of ROM-specific questions. Please use them. <---Smiley to avoid being characterized as a "****" again.

Not calling you a ****, but if you read my post, my question isn't rom specific. It's referring to all GB roms and I9000 roms in my experience. Can anyone else help?
Sent from my SGH-I897 using XDA App

Cdub3 said:
Not calling you a ****, but if you read my post, my question isn't rom specific. It's referring to all GB roms and I9000 roms in my experience. Can anyone else help?
Sent from my SGH-I897 using XDA App
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In-call volume is a known Cappy problem that is fixed in many of the custom ROMs available here. Some do a better job than others, but it is a ROM-specific issue.

I say try a rom that is based on kb1 the official froyo build. The kb1 kernel had the proper drivers fire the audience chip used in the captivate. The I9000 uses a different chip so all I9000 roms will not have the use of the audience chip for noise cancellation.
Roms like cognition and fusion might be worth a shot.

Thanks studacris. I actually am running cog 4 on my other cappy, I just love using my gb cappy more. Just hoping there was a way to get same/similar call volume as my cog phone. So is tweaks with sgs tools useless with the gb/I9000 roms? Are you the captivate creator? You know everything bout this phone! Lol!
Sent from my SGH-I897 using XDA App

Lol. I have no idea about the sgs tools tweaks, I get about 1 call a week never really looked into it myself.
I don't blame you for wanting gb it's pretty sweet, I haven't gone to froyo since I made the jump. If you want audience chip support and gingerbread goodness keep an eye on this thread http://forum.xda-developers.com/showthread.php?t=1125596

This should be in the sticky, thread closed.