Hi, can some explain a bit out how basebands and radio technology work? I read something suggesting that basebands might be region-related, but I have not noticed different basebands for different regions before - only with software upgrades.
Is there anything else which is region-related regarding kernels and Android software?
The baseband is basically the modem firmware. They are only different for different modems.
Related
I posted this on the wrong forum and was directed to post it here. I'm not new to the Custom ROM scene, having come from my HTC Desire. However, the SGS2 is my first Samsung product, and hence a few of the terms are rather confusing to me, and I hope this'll help somebody else as well besides me.
1. Why are there so many different kernels? KF1? KF2? XXKF1? XXKF2? What're the differences? Can I flash a KF1 kernel into a phone that already has KF2?
2. What's the difference between an i9100 and an i9100T? Can I flash a kernel designed for an i9100 into an i9100T phone?
3. What do the different shipped modems mean (from http://forum.xda-developers.com/show...hp?t=1131950)? How are they relevant when I'm choosing which ROM to flash into my phone?
4. What's a HIDSWVER and why are we collecting it (from http://forum.xda-developers.com/show...hp?t=1089874)?
soupiejr said:
I
1. Why are there so many different kernels? KF1? KF2? XXKF1? XXKF2? What're the differences? Can I flash a KF1 kernel into a phone that already has KF2?
Ask Samsung release 1 2 3 4 . KF1 before KF3 etc
Yes you can flash an older kernel over a later kernel .
A kernel is not full firmware just the kernel .
2. What's the difference between an i9100 and an i9100T? Can I flash a kernel designed for an i9100 into an i9100T phone?
NOT UNLESS IT SPECIFICALLY SAYS SO .
3. What do the different shipped modems mean (from http://forum.xda-developers.com/show...hp?t=1131950)? How are they relevant when I'm choosing which ROM to flash into my phone?
You get a modem with firmware different versions different parts of the world .
Shipped modems posts is putting individual modems all in one place .
Relevance is not required unless you want to try different modems with firmware .
4. What's a HIDSWVER and why are we collecting it (from http://forum.xda-developers.com/show...hp?t=1089874)?
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Code for updating firmware via KIES for individual phones and networks .
EG O2 UK firmware and update codes for updating via Kies used to spoof firmware upgrades .
jje
My previous phone was a Motorola "Motoronga" Milestone. Before flashing a new firmware, it was necessary know the frequencies/radios/basebands used in your country by your carrier. For example, in Brazil, Vivo carrier uses these frequencies: 850/1900/2100MHz. I used to use this page as reference:
http://and-developers.com/sbf:milestone#section201
It seems that with the Galaxies S/S2 it's somewhat different. And I see a lot of people with doubts about this subject. It seems that ANY firmware, of ANY country/region, of ANY carrier will work on this phone. But I'm not sure.
Is there somebody that can explain this? I'm not asking for a reply with a line or two, but a really full explanation about how all this stuff works regarding Samsung and the Galaxies phones.
And, of course, if this is already explained anywhere else, just tell me where.
Thanks.
Regards.
This has something to do with these: wiki. cyanogenmod.com /wiki/Samsung_Galaxy_S_II:_Support_Downloads (is a link, but I cannot post as it)
since the SGS2 now has all the bands in one model, so they didnt have to make different models with different region's frequencies, this is likely why all models work with all firmwares. because it includes all the bands needed (except tmobile usa of course).
And what are these?
XXKDH
XXKDJ
XXKE4
XXKE7
XXKF2
XXKG1
XXKG2
XXKG3
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PLEASE READ EDIT BELOW ALSO.CHEERS
Im quite familiar with flashing and odin and flashing kernals and roms via cwm and have done it many times but what ive been noticing lately are people who have modems that dont match their firmware.This is something ive never taken notice of before since i just did the basics.A modem is the country based part as ive found out so heres my question.To have a kg6 with a spanish modem (spain being where i live) do i also have to download my countrys firmware open the kg6 for the csc and kernal files then open the other firmware for the modem?.It just sounds a bit risky although its meant to make the phone function better.Im a bit confused cos when 2.3.4 isnt even global yet ive seen S2 phones with aparrently local modems.Is it possible to use a 2.3.3 modem with 2.3.4 then??....
EDIT:Ive been reading on and seeing that its the baseband that appears to be from 2 firmwares.I have kg6 with a xxkg6 baseband but am seeing others with kg6 and basebands from completely different firmwares?!.So is it possible to mix a 2.3.3 baseband with 2.3.4 cos gingerbread insnt global officially global so how would there be regional basebands.Is it safe and does it improve the phone that much?.Im interested in learning more about it and giving it a try but not without first being a bit more informed.cheers
Any modem can be used with any rom.
I have used modem ranging from ke7 to kh3 on roms from kf2 to kg6.
As far as choosing a modem, try them all, and find one which works best for you, as far as I know modems are not county coded so a kg6 modem is a kg6 modem whatever the country code.
Csc is just mostly apn settings and bundles apps for the region, generally you can use any csc with any rom, but if you have problems most csc's cover most regions.
Sent from my GT-I9100 using XDA Premium App
Thanks.What ive started noticing is that some people that have kg6 like me appear to have 2 firmwares.I saw one person for example that had a Galaxy SGS2-XXKG6-VR 2.4.2-Ninpho 2.0.5 EXACTLY like mine but my baseband is i9100xxkg6 and their baseband was xxkh3.how is that possible if you dont use 2 firmwares and what affect does it have over the operating system.i though this was the local side to it all like local operators and tower conections?how is it done safely?
Firmware version KG6 with Modem version KG1 or KH1 .
Modem is part of original rom package can be flashed separate versions are mostly interchangeable .Custom rom may have different modem version .
Modem file flashed via Odin as PHONE .
jje
Hi Guys,
I have searched around but cannot find an answer to my question. Does it matter if you flash a ROM/Firmware that is meant for a different country if it is unbranded?
Are there any advantages to flashing the relevant Firmware/ROM for your country or disadvantages to flashing an unbranded Firmware/ROM meant for a different country?
I live in South Africa and was thinking of flashing this ROM but just wanted to inquire first - http://wanamlite.com/forums/showthread.php?tid=375
Regards
Shiraz
In my opinion, you can go ahead and flash that rom without any concerns .The rom will work fine and will be stable(if it is stable lol).The only problem you might face is the modem..You might not get proper signal reception or data speed etc as the modem will be different than your country one because of flashing the new rom..However, you can easily flash another modem to suit your device. However, do make a backup before doing anything..U never know any screwups can occur..
By the way..I would also like to know the advantages of country specific firmware lol..though i have tried different country firmwares and they work perfectly on my phone(except that modem thingy i mentioned above)
Only advantage is the modem. But I did not face any problem yet about low signal or etc. And you can easily flash another modem via cwm or Odin. Custom Roms are much better than stock.
On the modem list page I see a reference to Samsung firmware versions and Google codenames as per modem. (Modems for 4.1.2, JB and such). And I was wondering what exactly is the relation between a modem version and the Samsung firmware version if any? If I understand correctly the modem itself (without RIL modules) is a firmware in itself related to specific vendor hardware, I understand how RIL modules might change from version to version as they are driver modules (from what I gather) or something of that sorts.
If I'm mistaken please correct me and lead me on the right path, I basically wanna know if I could flash older modems for my SGS 3 if I'm running let's say a ROM (SuperNexus) based on 4.2.2 firmware when all modems are for 4.1.2 but I would very much like to know how are the modem (and RIL modules) and Samsung versions connected.
Thank you for any help you may provide
You can flash any modem but no guarantee it works .Would not want to flash ICS modems on JB firmware though .
Modem is generally either a location modem based upon a general area or a vendor modem that may be more specific to a network .
General rule is to try modems starting from your country .
As noone has opened up modems we don't really know differences .
No idea what you mean by Google codenames the phone is a Samsung .
jje
JJEgan said:
You can flash any modem but no guarantee it works .Would not want to flash ICS modems on JB firmware though .
Modem is generally either a location modem based upon a general area or a vendor modem that may be more specific to a network .
General rule is to try modems starting from your country .
No idea what you mean by Google codenames the phone is a Samsung .
jje
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Thanks for the response but that's my question, you said it's ok to flash any modem yet you say you wouldn't flash ICS modems on JB firmware. Why is that? How are the modem and firmware bound? or are you just referring to bad modem performance. If the modem is hardware firmware in itself why does it have to follow any matching device firmware (ICS, JB)?
Thanks again
veritum said:
Thanks for the response but that's my question, you said it's ok to flash any modem yet you say you wouldn't flash ICS modems on JB firmware. Why is that? How are the modem and firmware bound? or are you just referring to bad modem performance. If the modem is hardware firmware in itself why does it have to follow any matching device firmware (ICS, JB)?
Thanks again
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Generally bad performance with ICS modems on JB possible that's to do with drivers .
It does not have to follow you can put any modem on any firmware apart from the ones with a different network band .
As i said modem is all guesswork and trial and error compounded by no accurate testing method .
RIL is rather confusing as i find no difference with wrong RIL compared to the matching RIL .
jje