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[Q] Need Help on Nexus S 9023 signal problem

Hi all,
I just got a new NS 9023.
When I got it, the system was 2.3.6(I dont remember if that is official or not)
After some simple tests, I flash the rom to MIUI. And MIUI works fine.
One day later, I want my phone go back to official rom. So I download a 2.3.3 official rom from google.(The link was found on this forum)
Then the problem came - The signal is worse then before. I can't get EDGE, but before I flash the "official rom", EDGE works well. i tried lots of baseband packages but none of them works.
Can someone tell me what should I do now?
Here are some information:
product name herring
hw version: rev 52
bootloader: i9020xxka3
baseband: i9020xxdk1
carrier info: vof
A friend of mine bought a 9023 the same time as mine.
I checked his bootloader, only one different is the carrier info, it is EUR on his phone.

check the IMEI number and see whether it's true or not ?
system -> about -> status

X1111 said:
check the IMEI number and see whether it's true or not ?
system -> about -> status
Click to expand...
Click to collapse
Baseband seen from system is I9023XXKD1, which I consider is correct.
and signal strength usually between -83 ~ -93dBm both in office and outside.
Also, I found a radio dump bin on sdcard. Is there any way I can use that file?

baileifirst said:
Hi all,
I just got a new NS 9023.
When I got it, the system was 2.3.6(I dont remember if that is official or not)
After some simple tests, I flash the rom to MIUI. And MIUI works fine.
One day later, I want my phone go back to official rom. So I download a 2.3.3 official rom from google.(The link was found on this forum)
Then the problem came - The signal is worse then before. I can't get EDGE, but before I flash the "official rom", EDGE works well. i tried lots of baseband packages but none of them works.
Can someone tell me what should I do now?
Here are some information:
product name herring
hw version: rev 52
bootloader: i9020xxka3
baseband: i9020xxdk1
carrier info: vof
A friend of mine bought a 9023 the same time as mine.
I checked his bootloader, only one different is the carrier info, it is EUR on his phone.
Click to expand...
Click to collapse
At the top you say you have an i9023 but your bootloader and radio are i9020. So which is it? Is your problem because you flashed your phone with a stock rom for a different model?
Sent from my Nexus S 4G using xda premium

Don't post your IMEI in public. I suggest you remove it. X1111 just wanted to check if your IMEI is changed, but that as nothing to do with your problem. Because if that was a problem, you couldn't get any signal at all.
As I can see, you are surely cofused which device do u have, and therefore flash wrong ROM/Radio. Did you try *#*#4636#*#*? If not try dial it, choose "Phone information", pres menu button, choose "Select radio band" and choose EUR band...
If that doesn't help you, wipe /data /cache and /system in recovery and flash correct stock rooted ROM. Hope that will help...

yes. i have a 9023 device and all 9023 around me have 9020XXKD1 information on boot screen.
Sent from my Google Nexus S using XDA App

Thanks tenhi.
I tried 4636 code and change my baseband to EUR. seems better now. but still not so good. i will keep testing.
Sent from my Google Nexus S using XDA App

[Q] Please Help! Using 9020a on T-mobile.

I was currently using MIUI GB build from brainmaster, and I wanted to switch to the ICS after finally finding out they halted the OTA update. Well I'm using T-Mobile, and when i flashed the stock rom back, i was not able to us the 9023t stock rom as it kept giving errors. So i had to tried the 9020a (which i believe is for ATT) and that worked. My phone is able to make calls and receive texts, but it only shows that its on edge (e) and no more 3g on the status bar.
My question is, is there a way to switch the baseband back to a 9023t build? or did i always have an ATT branded phone?
edit:
This is what my phone status shows:
Carrier: Tmobile
Android Version: 2.3.6
Baseband: I9020AUCKF1
Kernal: 2.6.35.7-gf5f63ef
[email protected] #1
Build: GRK39F
Another update:
Just verified after pulling my battery the model states:
GT-I9020T

It seems that you have flashed an I9020A baseband on an I9020T. There have been reports that people who have done this have never been able to get 3G again.
However, you can try to follow this link and flash the KI1 baseband and see what happens.
Just out of interest... do you know anyone with an AT&T sim that you can borrow to see if you can pick up AT&T's 3G now? (you would have to make sure that then APN for att is entered and selected) It's extremely doubtful but would be interesting to know nevertheless...

bajansurfer said:
It seems that you have flashed an I9020A baseband on an I9020T. There have been reports that people who have done this have never been able to get 3G again.
However, you can try to follow this link and flash the KI1 baseband and see what happens.
Just out of interest... do you know anyone with an AT&T sim that you can borrow to see if you can pick up AT&T's 3G now? (you would have to make sure that then APN for att is entered and selected) It's extremely doubtful but would be interesting to know nevertheless...
Click to expand...
Click to collapse
I will try and flash that baseband, and will update asap. As of right now, I dont have an ATT sim card, but if i do come across one i will update as well.

Also, do you know why it happened to let me install the 9020a rom, and not the 9020t? I had to root my phone from scratch all over again to erase the MIUI rom and to try to bring it back to stock. Every time i tried to install the 9020t/9023 it kept giving me the error message:
E: Failed to verify whole-file signature
But it worked like a charm when i attempted to do it with the 9020a.

I was able to flash the KI1 baseband with no problems at all. Now with this will I be able to flash ICS?

jd.nguyen said:
I was able to flash the KI1 baseband with no problems at all. Now with this will I be able to flash ICS?
Click to expand...
Click to collapse
Either flash the official OTA or an ICS ROM that doesn't contain a radio.

How to find out model number?

Hi,
My friend has a Nexus S which isn't doing OTA updates. She's still stuck with 2.3.6 and I'm trying to help her get ICS which means I need to know exactly what model it is. Under "About Phone" the baseband says I9020XXKF1. Is this a I9020A or I9020T?

I'd be leaning towards an i9020T but unsure if that baseband works with the A too. Best bet is to check behind the battery cover, if there is i9020 or i9020T it is the T version.
You'll be able to get her to 4.0.3 by downloading the upgrade .zip manually from google (through stock recovery), there is a stickied thread with the official links.

Thanks. I did a little googling and it seems that it's a T. If it ends up to be otherwise and I try flashing a T update, would it throw an error or would the phone get corrupted?

Sticker
You can get the exact model of the sticker underneath the battery also

If you flash in stock recovery it'll just throw out an error if it is a different model.

Hello guys,
I was having the same question today so I took the battery out and looked on the back of the phone.
It just writes GT-I9020 and the baseband version is I9020XXKI1. A friend of mine imported it from Hongkong in February and had android 4.03 installed. So what version could it be?
On the Wikipedia I read that a version of GT-I9020 was especially made for the Korean market. Can someone confirm that I have only GT-I9020 and not the A or T version?
Sent from my Nexus S using Tapatalk

[Q] Help! Wifi won't turn on after otherwise successful root/custom rom

Samsung Nexus S I9023 (Australian stock)
Baseband version I9020XXKI1 (from bootloader screen)
Baseband version I9023XXKI1 (from System Settings>About phone)
Bootloader version I9020XXKL1 (from bootloader screen)
Kernel version 3.0.8-g6656123
I have been using my Nexus S I9023 with official OTA 4.0.4 (and 4.0.3 before update) with no wifi or network problems. Yesterday however I decided to unlock bootloader, gain root access and flash a custom rom for performance/battery life purposes. I flashed CyberGR-MOD v.11 with the stock kernel and radio with CWM, with no other add-ons flashed.
It went well except for the fact that wifi has not been able to turn on since the first reboot. The switch will attempt to slide to 'On' but flickers, and hangs on 'Turning Wi-Fi on..' It makes no difference whether the SIM is inserted or not, Wi-Fi just does not turn on. Under 'Advanced' WiFi settings, WiFi MAC address and IP address are both Unavailable.
I have been searching for fixes for the last day, such as the WiFix apk found on this thread (http://forum.xda-developers.com/showthread.php?t=1445766) but nothing has worked. I have tried flashing other ROMs, reverting to stock OTA 4.0.3 and relocking the bootloader to return the phone to stock, but WiFi will not turn on in any configuration.
Portable WiFi hotspot also will not work, with merely 'Error' being reported when I try to turn it on.
Is the disparity between bootloader/phone stats regarding baseband version an indicator that I flashed incorrectly? Is it a radio problem?
Would greatly appreciate some speedy responses as I cannot seem to find any solutions to this particular problem.
[EDIT] Fixed problem by installing new kernel, was not able to do this before as my version of CWM was bugged and required an update. From then on was able to flash new files, kernel was the answer!

[Q] Help required - Nexus S i9020

I bought this Nexus S, i9020. It's just a couple of days old. Had ICS 4.0.4 and when connected to WiFi, phone started downloading latest system update. Installed the update quickly. The battery however, started draining too quickly after the update.
My problem or nightmare started when I tried to revert or downgrade this cellphone to Gingerbread 2.3.6, because I read that on GB, this phone's battery lasted for more than a day.
Anyhow, when I downloaded this One_Step_Click guide for downgrading to GB 2.3.6, the phone actually downgraded, but to my utter surprise, it has downgraded to Sprint Nexus S 4G, the phone now shows following:
Model number: Nexus S 4G (which it's not, its Nexus S i9020)
Android version: 2.3.4
Baseband version: Unknown
Kernel version: 2.6.35.7-ge382d80
Build number: GRJ22
The phone has lost the GSM signal, although SIM is still in the SIM slot. I can still connect to WiFi and connect to my Google account.
FYI, i am using Ufone GSM network here in Karachi, Pakistan.
Need urgent help in restoring my Nexus S to its original state to be able to use on GSM network.
Appreciate your help.
Thanks.

Seems like you are actually messed up. So you want Gingerbread 2.3.6 on your NS, right?
Just confirm me one thing, is it I9020T or I9020A? I'll be easily able to help you then

DJBhardwaj said:
Seems like you are actually messed up. So you want Gingerbread 2.3.6 on your NS, right?
Just confirm me one thing, is it I9020T or I9020A? I'll be easily able to help you then
Click to expand...
Click to collapse
Thanks for replying to my thread.
Yes, i am actually messed up.
The inside of the phone i.e. under the battery is only written i9020, nothing more nothing less.
Really appreciate your reply and help.
Thanks.

So, it is I9020T
Check your PM :good:

DJBhardwaj said:
So, it is I9020T
Check your PM :good:
Click to expand...
Click to collapse
I am facing a similar issue (in Pakistan) and can't seem to find the right baseband/radio. I tried almost all radios at http://forum.xda-developers.com/showthread.php?t=1116884 but the problem remains - I get very very low signals (my SIM works fine on other phones). Any PM for me as well

kamran666 said:
I am facing a similar issue (in Pakistan) and can't seem to find the right baseband/radio. I tried almost all radios at http://forum.xda-developers.com/showthread.php?t=1116884 but the problem remains - I get very very low signals (my SIM works fine on other phones). Any PM for me as well
Click to expand...
Click to collapse
Get your radio from https://developers.google.com/android/nexus/images#soju download the correct version for you model, un tar (or 7-zip), you should find your radio image within.