Hi i have a question about allowing the hspa network on stock froyo rom....
How would i go about doing this?
Flash a new modem? Possible one from an hspa capible device like the i9000?
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Would i also have to use an i9000 kernel or could i use my current existz voodoo kernel?
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Kernels have to match modems. kb1 to kb1, i9000 to i9000.
So is running a i9000 kernal better than using a captivate kernal?
if so what are the pros and cons if any?
rom kernal match
Look. I've tried different kernals with stock froyo 2.2 and learned the hard way with sticking with stock modem. Call quality was crap and battery life severly dimished with having a improper mix of modems and kernals. Since those mistakes I run continuum 4 with onix kernal 2.05 and jvk modem and have great batt life and call quality and download speeds are phenomenal. The best way I have found without going flash crazy is to see what the experienced people are using on their phones. The have it listed in their stats at the bottom of each posting they make. These people have been modding for awhile and know by experience what works best. Try that and you should have no problems getting the best combo for your captivate. Hope this answers your question. Good luck!
hsupa is over rated the phone already has hsdpa. hsupa may be good if you want to video chat or teather. but if you must get hspa in full you want to flash a different rom. no one has figured out a workaround for the brokn bluetooth calling with a rom/modem mismatch on a north american captivate rom.
as for the kernel, well i haven't tried an i9000 or i9010 or i9088 kernel on kb1 but they all should work. also i haven't tried changing the modem without changing the kernel but i believe that should also work. even if it is not recomended. i have never adhered to the notion that modems and kernels should match and had good luck with modems for t959d i9000m and i9088 on i9000 i9010 and i9088 kernels without major problems. it does seem that the older modems do not work all that great on the captivate with call volume or quality problems regardless of rom and kernel. but the kp1 from i9088 and kc1 from i9000 are both great on the captivate, i think i give kc1 the edge. if it weren't for those two and maybe others that i didn't try i would recomend leaving it all kb1 for the simple fact that a phone should make good phone calls.
the adage that the modem and kernel must match is true. ie. i9000 kernel/i9000 modem i897 kernel/i897 modem....it is absolutely true you must match those. if you use an i897 modem with an i9000 kernel or vice versa, you will have data but no voice. its not just a myth
Related
hey guys , i have flashed several rom and i really like the look and feel of the darky's rom however i have really bad reception issue. sometimes at home where i usually have full bar i have no signals at all , or last night i was traveling to Oklahoma city with my friend who is running captivate on stock rom and he had full bar while i had no service at all ! any idea what i'm doing wrong ?
Usually better to ask in the darky thread , but anyways.
Did you flash back to stock and then upgrade to darkys or did you upgrade on top of a previous rom? If the latter, flash back to stock and reinstall.
If the former, try a different modem. I am not using the modem or kernel that came with darkys rom. I am using the kernel with speedmod and ugjl2 modem and so far I have great reception. Of course that isn't saying much as I always have great reception using my cell device (can't think of its name atm.)
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You are running the I9000 version and not the captivate port. This alone wont cause problems if you have the reoriented kernel but the jpy modem you have will. I believe it does not have the 850 band. Flash a different modem from the modem thread in the development section and you should be good to go.
If im mistaken please forgive as its 7:30am and I still haven't slept yet.
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thanks for your reply ! well yea i did one click odin to stock 2.1 and then flash this using this guide http://forum.xda-developers.com/showthread.php?t=868262
and http://forum.xda-developers.com/showthread.php?t=808286 flashing xcaliburinhand's latest reoriented kernel (odin version) with voodoo (I9000_reoriented_v2.3.0) so i'm not sure what is the issue here ... can you all guide me what modem should i use ? i was actually thinking about the same thing because i use to have a phone that didn't have 850 bad and i had this kind of issue ! so any help of how and where to get a modem to flash will be greatly appreciated !
I personally use JK4. A lot of people find that JL3 works better for them. Either way at the moment these are the top two modems available. Both can be found here http://forum.xda-developers.com/showpost.php?p=9134296&postcount=2 and are flashable via CWM.
Also next time you are going to flash a version of Darky's just use this thread http://forum.xda-developers.com/showthread.php?t=890429 or any one that ytt3r starts because he ports them over to the captivate and you don't have to worry about messing with kernels or anything not working properly.
thanks i'll try it next week , since i'm running Axura 2.2 and so far i like it
From my understanding... a i9000 base rom should be used with an i9000 modem and kernel. At the same time a captivate base rom should be used with a captivate based modem. Please correct me if this is not true.
Now, what I don't understand is why are there roms that mix it up? Firefly uses the rogers Froyo.. which is JL1 captivate base rom, but at the same time use a JK4 modem which is i9000 from bell.
I'm not exactly sure where JPY, JS3 and more recently JS5 came from either.
generally using a an att or rogers rom will be incompatable with another modem. not that the phone wont work but you lose bluetooth audio. it is posible that this doesn't apply to the official rogers froyo or that they have accepted this as a minor compromise for adding hsupa.
i dont know of another reason to match modem to anything, many say to match it to the kernel but in the case of an att rom that doesn't help any, and i have run t959d modems on i9000 kernels and roms and there are no ill effects. so that theory is out.
some even like to run captivate modems on other roms giving up hsupa because they get more stable results.
really the non rogers/att modem on a rogers/att rom is the only known problem. all other "rules" are mearly safe suggestions, but if we did things the safe way all the time we wouldn't learn anything.
the only other criteria to choose a modem is that on att or in canada you want to use a modem that defaults to the 850 band. basically if you want hsupa use a bell or telus modem on i9000 kernel and non att/rogers rom. there are also chinese and austrailian and newzeland and other modems that work just fine. i find the kp1 from china to be the most versitile. i think the modem has all the bands so it's better for international use and i get the most satalites with it though the positioning is less stable untill you tweak the gps settings a little.
@ dani897 are you meaning the kp1 has all 5 wcdma bands enabled? i know of 850/900/1700/1900/2100 that would be handy.... is there any known draw backs or just try and see? it would be nice to change countries/carriers without finding/ flashing a new modem. great info thanks.
Hello all,
I recently rooted my Bell Galaxy s and flashed speedmod-k13e-500hz so now my phone is pretty fast and smooth but would like to improve my constant low signal issue and choppy phone calls ( also my batt life has decreased since rooting and applying speedmod with lagfix enabled and have cleared batt stats in cwm) Im on stock UGKC1 and am wondering if i can fix my issues. I would also like to flash 2.3.3 but wonder which rom/modem combo would be best for me and also a litlle how to since i believe i need gingerbread bootloader but am a little confused.
Thanks in advance for anyone willing to help or point me in the right direction.
GG
I find KC1 modem works really well... If you are having issues with that modem try JK4 or JL2 or the telus modem (TLJ or something) first 2 are both older versions of Bell Modems... as for 2.3.3, I have used simply honey, Juwe, GingerReal and current flashing Darky.
So far in order I like:
Juwe - JVH
Simply Honey - JVH
GingerReal - JVO
Darky - JVH (unkown, but loved the froyo version)
I always flash KC1 modem with gingerbread
I think the JVo modem is the best so far, but you can test which is the best for your region and phone.
Exactly, the JVO modem in the Toronto area is garbage, but probably really good in other places. Your 'default' modem is probably always a safe bet
Thanks for the replies. I will compare JVO to KC1 and see which one performs better. I just bought an Incredible S and seems to be getting better reception than the SGS in general.
Quick question, can I use i897 modem and kernel on an i9000 rom?
Just curious.
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quick answer is no
CremeFraiche said:
quick answer is no
Click to expand...
Click to collapse
This actually seems logically possible.
If we can use a reoriented i9000 kernel + i9000 modem on a captivate rom, why can't we use a matching captivate modem+ kernel on an i9000 rom?
I thought the important thing is to match the modem and kernel...
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gstern said:
This actually seems logically possible.
If we can use a reoriented i9000 kernel + i9000 modem on a captivate rom, why can't we use a matching captivate modem+ kernel on an i9000 rom?
I thought the important thing is to match the modem and kernel...
Click to expand...
Click to collapse
You're right. As long as they match it's fine.
Well experimentation if the spice of life.
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Did Anyone Try this?
Googler_1976 said:
Did Anyone Try this?
Click to expand...
Click to collapse
Well, accidentally I ended with this configuration:
ROM: Apex 9.2 (JVR)
KERNEL: Talon 4.4.22 (JVR)
MODEM: KH3
Teoretically this shouldnt be happening but everything seems to be working O.K. No Force Closes, WCDMA 850, average battery life, WiFi, etc.
BitteredBro said:
Well, accidentally I ended with this configuration:
ROM: Apex 9.2 (JVR)
KERNEL: Talon 4.4.22 (JVR)
MODEM: KH3
Teoretically this shouldnt be happening but everything seems to be working O.K. No Force Closes, WCDMA 850, average battery life, WiFi, etc.
Click to expand...
Click to collapse
you have always been able to run mix/match, until you need to make an actual phone call. no voice.
BitteredBro said:
Well, accidentally I ended with this configuration:
ROM: Apex 9.2 (JVR)
KERNEL: Talon 4.4.22 (JVR)
MODEM: KH3
Teoretically this shouldnt be happening but everything seems to be working O.K. No Force Closes, WCDMA 850, average battery life, WiFi, etc.
Click to expand...
Click to collapse
Yes I ran that combo until I got a phone call and the other person could not hear me and the volume was cutting in and out flashed back to JL2 all is good again
Running Dlevs 5.0, and latest talon kernel, modem JL2
As you can see from my signature I am still running 2.2 ROMs. I just prefer the stability, and have zero issues with both that I am using now on different captivates. One of them, Continuum 4.1 is and i9000 rom, using Onyx kernel with jk4, the other is the i897 Cognition, cog kernel, kb1.
I think, based on what I am reading here, I will try to intall the i897 modem and kernel on the Continuum 4.1 ROM. I really like this ROM but REALLY prefer the sound quality of the i897 roms because of the Audience chip.
I will experiment this weekend and report back. As of now, I prefer not to do this kind of experimentation with the GB roms. Anyone else interested in seeing how this turns out?
jack man said:
As you can see from my signature I am still running 2.2 ROMs. I just prefer the stability, and have zero issues with both that I am using now on different captivates. One of them, Continuum 4.1 is and i9000 rom, using Onyx kernel with jk4, the other is the i897 Cognition, cog kernel, kb1.
I think, based on what I am reading here, I will try to intall the i897 modem and kernel on the Continuum 4.1 ROM. I really like this ROM but REALLY prefer the sound quality of the i897 roms because of the Audience chip.
I will experiment this weekend and report back. As of now, I prefer not to do this kind of experimentation with the GB roms. Anyone else interested in seeing how this turns out?
Click to expand...
Click to collapse
Hi Jack man,
if you are still considering flashing i897 kernel & modem , my captivate is still Froyo 2.2 stock (rooted), with the uckb2 modem and kernel 2.6.32.9. I already have a dump of the kernel (I checked is working) and could send you a dump of the uckb2 modem (unchecked, I'm unsure about flashing this one back, since I have the 100% battery shutdown issue and still considering a RMA) if you are willing to try.
Let me know,
Angel
Well, I experimented. Here's what I used and how it went.
I installed Continuum 4.1 (a froyo 2.2 rom) then flashed the Exist kb1 kernel along with the kb1 modem. I thought everything was going to be fine. Calls worked fine, data seemed ok but slower than I was expecting, but when I went to turn on wifi if just didn't work. I made sure it was't the router - my wife's phone was working fine on the router, along with a laptop on it.
it would also not connect to the neighbor's router either. Flashed back to Cog4.5.3 - wifi worked fine.
Too bad, because I really like the small features of Continuum 4.1
If anyone has any ideas to fix the wifi in this setup let me know. I would love to keep it.
So I understand the i897 roms have to have i897 modems and vice versa with i9000. I've been searching for about an hour, but can only find that same answer I already just posted. My question is, can you use an i9000 kernel with an i897 rom? Since its an i897 rom, I would need to keep an i897 modem correct? Or would I use an i9000 modem due to the kernel. The reason I am asking is I would like to OC/UV. I liked the speed I got from Firefly, but not the battery life. So I went back to stock Froyo. I'm just going to stick with stock, root, remove bloatware, OC, and call it good. I just use it to play with when I'm bored in class and text/call, and stock does that just fine for me. Just want OC. TIA.
There are Froyo I897 kernels that support OC/UV, BLN, Voodoo, etc. I believe froyo is less picky and it is possible to mix and match i897 roms with i9000 kernels but that is not possible on GB. But as I said before you can use a I897 kernel if you just want OC/UV. (good kernel is Design Gear's Cognition 4.x.x kernel)
And since u r gonna use an i9000 kernel, u need to use an i9000 modem to avoid problems.
Kernel and modem need to be paired--i897 with i897 -- i9000 with i9000... (in order to not have issues)
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