Database Develop

[Q] Darky's Rom 8.0 - Issues with weak signal

I recently updated to Darky's Rom, 8.0, wipe edition, and although I really like how fast it is, and the battery life seems ok, I've noticed a strange issue.
I'm on Rogers in Canada, with a Bell Galaxy S Vibrant (i9000m) so it only gets UMTS band 1900.
While on the stock Samsung firmware, I'm often in an area where I get say 1-3 bars, but it seems to work fine.
On Darky's rom, it's constantly going from the 1-3 bars to no signal
In areas with good-excellent signal, it works flawlessly.
I'm guessing this is a bug with the modem he is using in this rom?
Any ideas anyone?

The modem he uses is the latest one XXJPY. Only thing I can suggest is try one of Doc's ROM's and choose the modem you had before you installed Darky's ROM and see if that affects performance. Some modems perform better for others purely because of their location (Normally Europe tbh mate). If you see better signal from a different modem on Doc's though and its a real problem to use Darky's, just make as much of a similar version or maybe one you actually prefer in his kitchen and install R64's theme ontop. Won't be much different tbh mate

Instead of flashing another rom why don't you just try flashing a new modem, in the JL2 thread found in the general section theres a JL2 modem file thats flashable with clockwork. Try just flashing the modem to see if it helps you out.
Sent from my GT-I9000 using XDA App

Magic Kitchen build your own rom choose the modem .
Couple of faqs on modems on the page .
http://romkitchen.org/sgs/
jje

Samdroid_G_S said:
Instead of flashing another rom why don't you just try flashing a new modem, in the JL2 thread found in the general section theres a JL2 modem file thats flashable with clockwork. Try just flashing the modem to see if it helps you out.
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
Thanks, I found it: http://forum.xda-developers.com/showpost.php?p=10188028&postcount=177
I may give that a whirl, at least to try it. It seems the general consensus is that the GPS does not work anywhere near as well with this as with the one Darky uses, but I definetly want to compare, so it's good. Thanks
JJEgan said:
Magic Kitchen build your own rom choose the modem .
Couple of faqs on modems on the page .
http://romkitchen.org/sgs/
jje
Click to expand...
Click to collapse
That's pretty neat, I hadn't seen that before

I'm running darky's 8.0 with a jl2 modem. Just find a modem that is flashable via cwm and flash that on top look in one of my recent posts, there is one in there. Then all you need to do is manually add your access point name after you flash the modem and you should be good.
Sent from my GT-I9000 using XDA App

JL2 Modem with 8.0
I'm running darky's 8.0 with a jl2 modem and the signal and GPS functions amazingly. I'm on Fido (Rogers Network) and highly recommend flashing the JL2 modem to fix your issue.

there you go!
Just flash with CWM

thanks guys, i'll give it a try.
btw I did some more investigation by going through the band selection.
Rogers, who I use, uses GSM (EDGE) on 850mhz and 1900mhz, and UMTS (3G) on 850mhz and 1900mhz
The i9000m supports GSM (EDGE) on 850mhz and 1900mhz, and UMTS (3G) on 1900mhz
Using Darky's rom, GSM 1900mhz and UMTS 1900mhz are working. GSM 850mhz is NOT working, hence when I'm in an area with poor 3g signal, it is dropping to EDGE, and since I'm not getting the 850mhz GSM band, I'm dependent on the 1900mhz GSM band, which is iffy in this area

So I installed the JL2 modem, and sure enough 850mhz is BACK!
Woot! Thanks people
I'll do some tests with the GPS later and see if that is still working correctly.

sw411 said:
So I installed the JL2 modem, and sure enough 850mhz is BACK!
Woot! Thanks people
I'll do some tests with the GPS later and see if that is still working correctly.
Click to expand...
Click to collapse
Great to hear! Enjoy this awesome ROM and if you haven't already, please consider donating as Darky has put a lot of work into the creation of the ROM.

no issues at all since switching back to JL2 modem, looks like this is a must for Rogers users.
Thanks again all.

Works for Latin America SGS
Thanks for the info. My phone works very well now.
Santa Cruz - Bolivia

Is there a way for me to verify the version of my modem? It looks like it's working better ever since I flashed JL2 modem, but I just would like to check...

Hello everyone!
Im from Malaysia. I flashed my GT-I9000 about with Darky ROM 10.2 final which is based on JVQ ROM (Gingerbread 2.3.4) about a week ago. Everything else is great except for the poor signal strength. I suspected this could be due to Europe Modem. Can I flash my phone with Asia modem? If yes, what the best asia's modem version to be used with DarkyROM JQV v10.2?
My phone:
GT-I9000
19000XXJVQ
2.6.35.7-I9000XXJVQ-CL281085 [email protected] #DarkCore_2.9.1_JVQ
DarkyROMJVQ v10.2

[Q] GT-I9000T flashing roms

Hi,
I would like to flash a rom to this phone. Can I flash any rom made for the I9000? What about the modem? I need this this phone to work in the 850 band.
Thanks,

Can anyone help me with this? There is not much information available about this specific model, I want to flash onecosmic's rom or F1 Innovation if the first is not stable enough.
Also there are no firmwares from my carrier in sammobile's website. Can I make a backup of my stock rom to restore if I ever need to take the phone for repairs?
Thanks,

Just to be safe you better confirm with the ROM developers first. If you just flash it carelessly there's a risk of incompatibility and other matters.
The modem doesn't really matter since it'll follow the modem of the custom ROM that you're going to flash to your phone. Just make sure that your base stock ROM fits the prerequisite (e.g JVU, JW1, etc). For backups you can make one using kies or make an nandroid backup using CWM.
Hope that helps

go ahead and flash i9000t is the same as i9000 the only thing that changes is the modem, just make sure you flash a modem that supports the 850hz band

i9000T
BradleyR2010 said:
go ahead and flash i9000t is the same as i9000 the only thing that changes is the modem, just make sure you flash a modem that supports the 850hz band
Click to expand...
Click to collapse
Is it true for C-RoM 4.4.2 AOSP as well?
there is a question in the development of that rom and the answer is that only i9000. As far as I understand the only difference between the i9000T and the i9000 is the 850MHZ 3G band support. the modem that is used in this Rom is supposed to support the 850MHz as far as I understand so I have no idea why shouldn't it work. any ideas?
could it brick if I try?
Thanks

amirai said:
Is it true for C-RoM 4.4.2 AOSP as well?
there is a question in the development of that rom and the answer is that only i9000. As far as I understand the only difference between the i9000T and the i9000 is the 850MHZ 3G band support. the modem that is used in this Rom is supposed to support the 850MHz as far as I understand so I have no idea why shouldn't it work. any ideas?
could it brick if I try?
Thanks
Click to expand...
Click to collapse
Check great sticky thread by @xsenman, there he has described all the differences between some 20 sub-variants of the SGS1
tetakpatalked from Nexus 7 flo

[Q] Modem question

Hi All..
I have been having some peculiar problems regarding modems and was hoping someone could share some insight on it.. I get my modems here: http://soggycashew.weebly.com/index.html , and currently am on MIUI, but the same problem that I am facing persists with CM7, ICS, or any I9000/I897 roms too.
First off, I'm from Malaysia and using Celcom, thus these bands are used:
3g: WCDMA-2100
2g: GSM-900
The problem that im facing is, whenever I flash a modem that doesn't have 3g 850mhz by default, I break my 2g.
Something like this: Flash a modem with 850mhz by default (ones that i tried: UGKG3,BVJJW2,UGKC1,UGJK4), everything works fine.
Flash modems that don't have 850mhz by default (ones that i tried: ZSJPG, DXJV9, ZSJV6), 3g works fine (wcdma 2100) but 2g is broken and if i force it to "2g ONLY" i get emergency calls only. Checking the service menu, i realise that it is getting a signal from another carrier using the gsm-1800 band, but doesn't get anything from home network on gsm-900 band.
Any idea why and how to overcome this?

Hmm... Use one of the modems that work for you, and the problem is solved!
Sent from my CM9 ICS i897 Captivate

You can try looking at samfirmware.com see if there is intenational package for your are and pull our the modems then put it in a cwm scrip for cm7/ics.

korockinout13 said:
Hmm... Use one of the modems that work for you, and the problem is solved!
Click to expand...
Click to collapse
Yea, that works too, but all the modems that work are not even remotely meant for my region.
prbassplayer said:
You can try looking at samfirmware.com see if there is intenational package for your are and pull our the modems then put it in a cwm scrip for cm7/ics.
Click to expand...
Click to collapse
Actually the modem that is used here officially for the i9000 is DXJV9 and already available and is one of the modems that I tried but is giving me the problem..
I'm using BVJJW2 for now, somehow UGKG3 heats up my phone very fast.

I have similar problem.
My cappy can use only 2G network but not 3G.
I am running on Doc's Master ICS V3.1 with its default baseband.
Is there any one facing the same problem ?
Please advise.

[Q] 3g connection poor in overcome 4.1

my tab has a poor signal connection in this overcome 4.1
firstly I thought the problem was on my provider
but when I flash the other rom, the signal is a lot better than before
but I love overcome rom
so does anyone know how to fix it??
thx before

Probably the problem is in modem? Try another one...

can i just change another modem?
I'm from asia and from overcome guide jpz modem is for asia
is it safe to try like jmf modem or jk3?
this is quote from chastity
"I had an issue with 4G (in fact it almost always chose Edge) but I fixed that by installing the stock modem i.e. "downgrading" from KM2."
is this can solve my problem too?
but i don't understand how to downgrading from km2?

First, he cant be on 4G. Must be a typo.
Second, he downgrade from km2 to stock.
You never had km2, so you cant downgrade.
Just try other modems and I dont think at&t stock modem will help though.
Sent from my GT-P1000 using XDA App

Which Radio To Use on Slim ICS [2.6]

Hi guys, which radio modem should I use on this ROM, I'm Vodafone UK?
Thanks. I am currenlty using radio-cm-7-GalaxyS-NEJV5-signed.zip which I got here CM7 Modems

i think its up to u........ test different modems & findout which suits u best....... and there is a lot of modem country and carrier wise......... but in average XXJVT & XXJVU is great