C5503 Basebands - Sony Xperia ZR

I'm having huge problems with my grey import C5503 not being able to use mobile data properly in Australia on Virgin/Optus. My research had lead me to finding I may need to flash a new baseband but I'm having trouble finding an extensive selection anywhere on the interwebs specifically for the C5503. Can anyone advise the best baseband for my area, where to get it and which baseband versions for other handsets will work on the ZR?

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[Q] Baseband

I was wondering if the baseband is unified like in my old Xperia x10a, i have a p990h right now, and i don't really know if these baseband posted here will mess with my data connection... i do know that for europe and america in general are different physical parts in the phone, but if the baseband are unified, i'll be able to use any firmware, and my data connection will work perfectly.
Regards
hey guys, no one knows about this topic?

Baseband?

Okay I got a question about Basebands, I have the UK version of the Milestone But I live in the states, In Iowa. Is there a different baseband I should be using? Cause I've never seen a baseband in any of the lists I've found for north America or anything like that.
Argentina-Personal.zip
Brazil.zip
Canada.zip
French.zip
Germany.zip
Isreal-Celcomm.zip
Italy.zip
Singapore.zip
Telus.zip
Thai.zip
Venezuela-Movilnet.zip
That's about all I've seen for basebands. If someone could clear this up for what the baseband actually does and what I SHOULD have that'd be great thanks. You can see my current Baseband in my signature.
I guess baseband is more like, what fits you best.
If i'm wrong please correct me, but if you'r getting good reception its all good.
I also am in Iowa-Sioux City, and have found that the Singapore basebands are the only ones that work here, tried them all after I flashed a rom that changed my baseband. I believe that the baseband sets thew acctual frequencys that your phone uses,there are many in each of the bands that are avaible.
Sent from my Milestone using XDA App
too bad for me
i think i lost my baseband?
it shows me a "no service" my milestone cant detect my simcard's network
..... help please...
hey, where could i found this Venezuela-Movilnet.zip baseband? i really want this to use my 3g network on my xt720
There are two things about baseband: the baseband software and baseband configuration.
Baseband software (I don't know much about this, sorry...) may be in your system rom somewhere and you flash it with a zip file. In Eclair you'll see software and confugiration version in "About" page, but since 2.2(?) you'll only be able to see software version. I don't think this differs much for each people. You can find the latest(?) here:
code.google.com/p/cyanogenmod4milestone/downloads/detail?name=update-bpsw-MSG39UPEU_A1.19_0.90-I4.zip
(sorry, I couldn't post outside links...)
Baseband configuration (located in /system/etc/motorola/bp_nvm_default/), according to my understanding, is to interpret GSM signal to something your phone can read. This is more like what fits you best. For example, with a baseband config from stock 2.1 rom my phone works well in the basement, but with another, it may show "no carrier".

[GUIDE] : Flashing a baseband and why you should do it

Hello All.
I had a small talk with DoomLord about flashing base-bands over the phone and the difference it would make for your phone so have decided to make the information that I got available for the public here so that no one else has to go to the same hassle I did Googling for all the stuff.
I am a power user of Android. But completely unbeknownst to the development side of the OS. So if I make any mistakes, I request you to point them out to me and I will make the necessary corrections.
So what exactly is a baseband ?!
Inside of your cellphone, there is a chip embedded that enables it to communicate with your carrier's transmission towers. This chip is known as a "baseband processor" and it is responsible for signal processing and realtime radio transmission operation. (Got that bit from WikiPedia)
The baseband is actually a piece of software that instructs that processor on what frequencies to operate on.
Kind of like a driver for any hardware that you might install on your computer.
So any gain in the level of harmony between the hardware and software that make data transmission happen on your phone (GSM/DATA) is only going to benefit the phone's performance. ( READ battery life, signal reception, etc.)
Also, each baseband has it's corresponding libraries which also need to be provided for it to be working optimally.
So that's that for the theory part.
I'm open to corrections. If anyone can point them out, I will be happy to edit the post. But I had a lot of trouble trying to understand WHY I should flash a particular baseband and what difference it will make.
Currently, at XDA we have baseband patches for baseband -36 and -64 available.
So as per your ROM requirements, it would be better to flash any of these base-bands onto your phone with their corresponding libraries.
Which brings us to the next part.
ACTUALLY flashing the baseband.
Pretty simple process actually.
But from what I know, you will need a rooted phone with an unlocked bootloader to do this. (!! Not sure !! )
And a custom recovery (Clockwork MOD) that can allow you flash .zip to NAND.
EDIT : You just "NEED" root. (Thanks Flo95)
Please follow post 2 for further info on how to do it without root.
My ARC S is rooted and has an unlocked bootloader.
So all that you need to do now is download the following :
1.Flashtool.
2.Baseband that you require.
3.Corresponsing baseband libraries
I will be posting more on this with screenshots so that everyone can enjoy the same benefits that I have currently after using my phone on -36 baseband and using the corresponding patches.
Credits to DoomLord (For awesome DOOM Kernel) and Iridaki (For baseband patches). If there is anyone else to credit, please do point and I will acknowledge the same here.
I invite inputs from other experienced XDA members to provide more technical Know-how on why this is necessary. Sadly, there is insufficient material right now on this topic here.
Thanks.
EDIT :
Lets share a list of working Basebands in various areas :
For eg. :
Gujarat, India : 36 works fine on Vodafone 3G
64 works fine on Vodafone 3G and Airtel.
NSW Australia (on the Optus network) : Baseband 36 tested to be working great
Finland:
-64 works great for Sonera / Saunalahti / Elisa / DNA
-36 drops connection alot for Saunalahti / Elisa
Croatia
baseband 56 works great in Croatia
You can point to the baseband working for you and your location and I will update the post accordingly.
Thanks
Please click the "THANKS" button if you feel you've benefited from the info !
You can flash basebands without an unlocked bootloader, as it happens when "normal" users update their devices the official way without need of an unlocked bl.
You can get recovery with SE Extreme Tweaker on locked bootloader, too.
Only thing you need is root.
But for kernel awesomeness I'd definitly recommend to unlock the device.
Sent from my iPad 2 using Tapatalk
What baseband is actually the best for uk in terms of signal battery and gps?
Sent from my LT18i using Tapatalk
Thanks for this topic!! ok I attach here the post I published in the other thread with no answer :
" @Iridaki: Sorry for my stupid question... But is there a way to flash another baseband directly from recovery?? Or I don't know, with root explorer... I'm on firmware. 42 rooted, with locked bootloader and with recovery. Thanks!
Sent from my Arc S LT18i using Xda Premium App"
Thanks in advance for your answer!!
rkanwar said:
What baseband is actually the best for uk in terms of signal battery and gps?
Sent from my LT18i using Tapatalk
Click to expand...
Click to collapse
I think this is a great idea to discuss what basebands work best in what areas, it will certainly help a lot of people make the right (and informed decision).
To start off, I am in NSW Australia (on the Optus network) and I have found that the ideal baseband for me is .36 - All the other ones work fine of course but the .36 offers best/optimum battery and radio output for everyday use (with the latest DooMKernel of course!)
Hi, Im from the Philippines and wondering what baseband suits for my Arc S?
theduke89 said:
But is there a way to flash another baseband directly from recovery?? Or I don't know, with root explorer... I'm on firmware. 42 rooted, with locked bootloader and with recovery. Thanks!
Sent from my Arc S LT18i using Xda Premium App"
Thanks in advance for your answer!!
Click to expand...
Click to collapse
Yes there is a way to flash the baseband without Flashtool, but we wont publish it for now, since it's not working reliable on me. For theorie its working like an SE fota update. Which uses binary diff and flashes the diffs to the corresponding areas. This way you could flash all partitions. But this is only theory for now, because with flashtool we have a better way which is very very safe. Even if flashtool fails the phone can be restored everytime. Via FOTA you can really brick it forever
@All asking for which baseband fits best:
Please please DON'T start flashing basebands without thinking about now.
Normally ALWAYS use the baseband which comes with the ROM! For example SE always has the corresponding baseband included. This baseband fits the android libs it comes with.
On custom Roms please read what the developer of the customRom telly you. If he/she has developed the Rom for specific baseband libs.
All other things like baseband patches are tested and developed by other developers which know what they are doing. So if you use such a patch ALWAYS read the manual and the requirements. Because it CAN happen that it is NOT possible to use a GB baseband on a ICS rom and vice versa. The is a little more than "just" libs and firmware. Also the java part framework/base/com/java/internal/telephony....
has to fit the baseband (SE is very special here).
So i hope now you all understand. Please please please leave the decision which baseband is best and which is working to the devs who know what they are doing!!!!!! Don't come here and tell "i tried baeband xxxxx now my phone randomly disconnects data/voice/..."
Thanks
I'm in Victoria, Australia on the Telstra network. Does anyone know which is the optimal baseband for me to use?
Cheers.
Crikey83 said:
I'm in Victoria, Australia on the Telstra network. Does anyone know which is the optimal baseband for me to use?
Cheers.
Click to expand...
Click to collapse
You completely ignored the post above yours, didn't you?
iR¡[email protected]!* via Tapatalk
Finland:
-64 works great for Sonera / Saunalahti / Elisa / DNA
-36 drops connection alot for Saunalahti / Elisa
baseband .56 works great in croatia
iridaki said:
You completely ignored the post above yours, didn't you?
iR¡[email protected]!* via Tapatalk
Click to expand...
Click to collapse
Hehe, maybe just a little bit. The rest of the post was supposed to read that I am currently running baseband 64 but have **** internet connection even with full network reception.
Sent from my LT18i using XDA
ive been using baseband 36 so far, not bad might try 64 soon

Flashing without losing any features

Hey,
I have a UK unbranded xperia z with has been a great phone apart from the trickle way that the device handles photos and compression etc, the latest firmware for this device is supposed to fix this problem how it's still not out in the UK however seems to be everywhere else.
The of suite doesn't now show the latest version however when going to Sony's website it's listed but unavailable to download.
My question is can the phone someone be manually flashed without losing the DRM features or perhaps be forced to download the software from an alterative source.
Think the version I am looking for is 10.3.1.A.2.67 for the 6603 model.
Anyone help?
Thanks
Sent from my C6603 using XDA Premium 4 mobile app
TBH I have no idea what are you talking about, but i guess you want to flash .67 fw right?
If yes, then:
http://forum.xda-developers.com/showthread.php?t=2240614
and choose some .67 fw from general section. ex.:
http://forum.xda-developers.com/showthread.php?t=2455849
flashing a stock tft from a different region may lost your localization. If you do not mind any localization matter, fine, otherwise you have to wait.

[Q] Are there any t-mobile based ROMs?

Hey are there any T-mobile (c6606) based ROMs. I have a c6602 and want to fiddle around with it and see if I can get Wifi Calling to work. I know there are FTF for the stock T-mobile, but I was reading it isn't fully compatible and people have theories that if you just flash it without the baseband that it technically should work... but I don't think anybody has confirmed it. Any information is appreciated!

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