Database Develop

JM5 or JH1?

Whos tried both? Whats better and why?

rhys100 said:
Whos tried both? Whats better and why?
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+1
I want to know the same thing and also, if the official Kies JM1 firmware update is the same with the one from samsung-firm ?

I'm using JM5 now, updated from stock via samsung firmwares and it seems to be a lot faster with the lag fix.

I found JM5 was better - especially for memory leaks. Startup on JM5 i have around 160mb free, but with JH1, only 130mb, and it drops to 99mb pretty quickly even after closing apps with ATK.
Without a lag fix, there was still lag.
The CSC only has 6 localities, 4 of them are chinese, and only UK and USA, where as JM5 has loads more including Australia
I found wifi and 3G/HSDPA stronger on the JM5 radio as well. Had major issues with wifi dropping out similar to JF3 with JH1. GPS was ok, but not on Cell triangulation. JM5 was much more accurate.
I also had issues flashing back to JM5 after flashing JH1. I worked out that if I had partition checked, and included the 512 PIT file, odin just hung. Flashing back to JM5 without these worked fine.
There's certainly nothing new in it, Quadrant scores have been lower than the base JM5 as well (from another thread), so if you're on JM5, just stick with it.
Hope this helps.

My phone is from Singapore. So is there a problem for me to flash jm5 which is an euro version? Thx. Noob here.

JM6 running awesome here! I found it better than JM5.. Haven't used JH1 due to poor reviews..

I flash from jg4 no problem at all, gps is way better in jm5
Chronosbunny said:
My phone is from Singapore. So is there a problem for me to flash jm5 which is an euro version? Thx. Noob here.
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Sent from my GT-I9000 using XDA App

yc1437 said:
I flash from jg4 no problem at all, gps is way better in jm5
Thx...will try tomorrow. Hope everything goes smoothly.
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JH1 only has English UK/US, Korean and 3 chinese locales.
But it is very smooth and bug free. It doesn't contain the default number app when you try to add a default number for multiple contacts (Reason for my choice of JH1 over JM5.)
JH1 contains a native task manager which shows my memory over 175MB ram after a day use, after a reboot or "fast reboot" app another good 20-30MB is freed.
I am using the JM5 modem file though as I find the GPS is stronger and somewhat usable for walks (after changing the gps.conf to use 4 uk pool time servers as I am in London, I find this fix assists the picking up of signals ie more sats, faster locks.) JM5 also picks up the signals stronger and holds on to them for longer.
JM5 PDA was a little jumpy at times for me and the memory showed less.
Both tested after OneClickLagFix. GPS were both tested from the same spot outside my flat window (after giving both modem files a 5 mins warm up time through LbsTestMode Get Position Test.)
Anyone know of a good firmware with better GPS than JM5 (Modem file is XXJM3)?

kalpik said:
JM6 running awesome here! I found it better than JM5.. Haven't used JH1 due to poor reviews..
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+1 on this.

I am using JH1
I am from Malaysia, currently using I9000ZSJH1 with mimo lag fix quarant 1.4k but phone still lagging, I dont think it's firmware tho mayb it's something wrong with my device or external sd card?
Read some post before that one said I9000XWJM5 with CSC I9000XWJM2 is the best. Any issue to use this mix different firmware? Is that ok to use Europe firmware as I am staying in Malaysia?
I am going to try this out then apply Tayutama update.zip lag fix. Wonder will it solve my current lag issue.
Hope to get more advice or oppinions on this. thank you

[Q] For those with custom kernels/modems in the PA,MD,VA, or D.C. area, please read!

Alright guys, here's my problem:
When I first got my phone, I had excellent cell reception and all my calling features worked, i.e. bluetooth calling in particular. But this was on JF6/JH7 STOCK.
I will not go back to stock, I just love my custom ROM too much. But the problem I have is that I've lost my bluetooth usability and my cell reception is questionable at best sometimes. I live in Maryland, and it's now a law that we can't use cell phones at all while we're driving unless we use it handsfree.
I've tried a slew of combinations including Speedmod and Firebird2 with at least 4 different modems including JK3, JK4, JL2, and JL3.
So here's my question to you all:
With your custom kernel/modem selection, do you have usable bluetooth WITH good cell reception? And if you happen to have a FORD vehicle with SYNC in it, does your setup work clearly with it? (Even though I'd imagine it to be the same with Honda/Acura/Nissan/etc...)
Please include your setup in your post!

Long island ny, in know that is not your area, but speed mod, dill pickle, firebird, ursa minor, sucker punch, paragon kernels with jk3, jk4, jl2, npk1 modems all work with my ford sync fine.
Current set up is
Paragon rom
Dill pickle kernel
Jk4 modem

In PA running Serendipity 5.10, Suckerpunch #50 and JK4. Sync also works great in my car and cell reception is also good.

[Q] Choosing which modem to use

I'm from Singapore, and currently using Darky's v10.1 ROM. I recently flashed ZSJPG as my modem, but it wasn't as good as my previous one, which i vividly remember it as XXJVO (i have no idea what was my previous modem, since i didn't change anything except flashing Ultimate's ROM -> Darky's ROM), but anyhow i remember it as XXJVO.
Anyone from Singapore/Malaysia could advice me on which modem to choose right now which would reduce my battery consumption rate?

Hey, currently am in the same boat living in Singapore for work and just started using Darky's v10.1 from last weekend. Been doing the modem flash dance for awhile to try to reduce my battery power and get more consistent H/3G access when mobile. I only started changing modems in Darky's v9.5 and am going to start again. I basically ended up on JPP but from the threads I see a lot of recommendations for ZSJPE and ZSJPG.
I tried a number of modems based on the thread http://forum.xda-developers.com/show...ostcount=11945
Based on this (also lots of Google searches), this is the order I tried.
- XXJPY (which was default on v9.5. This was ok but wasn't sure if this was applicable to Asia)
- ZSJPE
- ZSJPG
- JPP (JPP replaced XXJPY - so this is what I settled on with v9.5)
I rechecked the threads again today so am thinking of trying ZSJPD, JP6 as well as JPP under Darky's. I heard good things about ZSJPE (and ZSJPG) but I had spotty internet reception where I traveled so settled with JPP.
Currently, my average battery usage is 22-24 hours but the first 12 hours (my daily usage of H/3G surfing during commute and lunch, music during my commute to and from work, and occasionally checking email) I get to about 30%. I leave my phone overnight to drain (which drains to about 5%) and swap out to new battery.
Am also interested in what other people in Singapore are using as well (btw, am on Starhub). Would be good to compare notes.

Get Perkas File Stash from the market, you can download modems straight to your phone for flashing. You should be able to find one that suits, I know that it has JPY, JPE, JPG, JPP, JVO and many more
Sorry I can't help you as I'm not in Singapore

Zhousibo, your link's not working

Try this http://bit.ly/heHv4y

Thanks for the help!

[Q] Engine Interference

My buddies Captivate, which is still running a 2.2 I9000 rom, kernel, and modem is getting engine interference from our work truck when he makes or receives a call and it makes him sound a lot like a robot. I have flashed multiple modems on the phone without any success. The interference gets worse as the engine revs up and goes away completely when idling. My Captivate never did this, nor does my Atrix. Is this a hardware problem or something I maybe able to fix with another modem?

[Q] Captivate - Hissing/Static Issue

I just got myself a Captivate for $120 from cowboom.com. Great phone, just a smaller version of Infuse, which I also happen to have. I really like the fact that charger port is at the top.
Anyways, when making calls, I hear mild but noticeable static which bothers me a bit. When I plug in an earpiece, I only hear it from left ear piece and sound through right ear piece is just fine. Can we tell if this is because previous owner flashed incompatible ROMs/Kernels/Modems, or just a bad hardware? I don't want to return this phone because it has a perfect GPS, but I will have to if the static problem is hardware related.
On a different note, I never knew that GPS on Captivate could be this good. It is a lot better than my Infuse. I had a Captivate about a year ago and GPS on that was a colossal mess. I feel like I need a PhD to understand the inconsistency of GPS chips in Captivates and Infuses.
Thanks in advance.

Here's some more info:
Baseband Version: I897UCKB1
Kernel: 2.6.32.9
Build: FROYO.UCKB1
Modem - I don't know how to find out....
I just rooted it and tried some sound mono conversion apps from the market which didn't help. Thought process was that if I can just mute 'left' and get all my sound through 'right' - that would solve the problem, but none of the apps allow me to change the left-right balance discussed above.

Baseband version IS the modem. Everything running is compatible.
You might want to try flashing a different modem. Top of the development section is a sticky.
Make sure its a I897 modem and not I9000.

If you're rooted then you might want to try flashing a voodoo kernel- that will get you nice sound boost and some clarity.

you can try flashing a different rom/kernel/modem...but if that doesn't fix it then i'm pretty sure that's a hardware problem...