Should KnowWarranty Void Issue:
» Click to show Spoiler - click again to hide... «
1. Flashing your firmware manually voids warranty (Other than update firmware via NSU / FOTA).
2. Strip off your device voids warranty.
3. Strip off the warranty sticker.
4. Any other user fault (drop / sit on lcd / water caused defect etc. voids warranty).
5. Changing the product code and/or IMEI of the device.
6. Hack your phone
Useful Code For Nokia:
» Click to show Spoiler - click again to hide... «
- Check Serial Number
*#06#
- Check Firmware
*#0000#
- Check Mac Address
*#62209526#
- Change Profile to Silent/General
*Press and hold # key in standby mode for 3-5 seconds
- Soft Format Phone
*#7370#
After that enter default password "12345", phone will restart.
- Call Lifetimer
*#92702689#
Shows total hours of dialed and received calls of the unit (good for checking 2nd hand N97s)
- Displays the bluetooth-address of your device
*#2820#
- Product code
open the back cover and take out the batteries...and u will see your product code
Certificate Error Notification - General Explanations
» Click to show Spoiler - click again to hide... «
Message
- Certificate error. Contact the application supplier.
Explanation
- You may have tried installing unsigned application. Note that signing is mandatory S60 3rd Edition. You can use self-signed certificate or developer certificate from Symbian Signed to sign your application.
Message
- Unable to install. Constrained by the certificate.
Explanation
- This message pops up when you attempt to install developer certificate in the unsupported device. The developer certificate from Symbian Signed can only be used in a limited number of devices. Remember that you have to send your IMEIs to Symbian Signed when requesting certificate. You cannot use the certificate in other devices that is not in your IMEIs list.
Message
- Required application access not granted.
Explanation
- Check that your certificate can be used to sign all capabilities needed by your application. For example, if you use self-signed certificate, you can only sign basic set capabilities, i.e. NetworkServices, ReadUserData, WriteUserData, LocalServices and UserEnvironment. If your application requires one of the extended capabilities, for example SwEvent, you cannot sign it with self-signed certificate. In this case, apply for developer certificates from Symbian Signed.
Message
- Unable to install a protected application from an untrusted supplier.
Explanation
- If you use self-signed certificate, make sure that your application uses unprotected UID, i.e. 0xA0000000 - 0xAFFFFFFF. If you use protected UID (0?20000000 - 0?2FFFFFFF) or legacy UID (0?10000000 - 0?1FFFFFFF), you will get this message.
Message
- Unable to install.
Explanation
- This message may come up when your installation file (.sis/.sisx) copies files to other application?s private folder, i.e. \private\uid. Note that Symbian 9 introduces data caging concept, it means you dont have access to other applications private folder.
Message
- Expired Certificate
Explanation
- Do this? Set the phone date back by 1 year or 5-6 months.
Message
- Update error
Explanation
- Uninstall any previous version of the application, then switch on/off the phone and install again.
How to sign an application (sis):
» Click to show Spoiler - click again to hide... «
Step:
1. Register.
http://cer.opda.cn/en/?module=index&action...action=register2. Apply certificate
http://cer.opda.cn/en/?module=certificate&...te&action=apply3. Wait the cert process. Normally 1-2 days. But got some people can get it in couple minutes, some need few days.
4. After cert processed, download these:
(i) .cert,
(ii) .key
(iii) SignSISTool.zip

5. Extract the signSIStool.zip
6. Open sign tool application

- click it, and open signsis
- click it, and open unsigned sis file
- click it, and open certificate (eg. opda.cn_x6_ping的x6_35**460*******8)
- click it, and open password (eg. opda.cn_x6_ping的x6_35**460*******8)
- click it, type the name of output
- click it, done
7. Enjoy it.
Source: supplied and edited by
ping0613How to sign an application (advanced version. not recommend for newbie)
» Click to show Spoiler - click again to hide... «
Steps:
1. Downlaod this
link2. Extract the file you download
3. Double click extsis.exe

4. Click it, open the file which you want to sign
5. Click sign

6. Click Key pairs

7. Click it, open the cert
8. Click it, open key
9. Click it, type name. (eg.ABC)
10. Click Add profile

11. Click it, select the profile you saved just now. (eg.ABC)
12. Click Add signature
13. Click it to close
14. Click File > Save as > .....
15. Done
Note: This is all the step for 1st time sign apps. The 2nd time sign apps can skip Step 6 tp 10.
Source: supplied by
ne0cz and edited by
ping0613Original post please refer here:
link How to check product code
» Click to show Spoiler - click again to hide... «
The code is printed on the white label beneath the battery (e.g. CODE: 0520001).

Common porblem: "H" for hang??
» Click to show Spoiler - click again to hide... «
real story from one of the forumers
QUOTE(payaluas @ Sep 4 2010, 09:44 PM)
yes..agree with you'all...i'm the person who like to explore something new.
the chronology of my problem :
04/09.10 --> buy my nokia C6 ori set from shop
05/09/10 6.00am --> finish charging for 8 hours
05/09/10 6.30am --> update firmware from 11.0.021 to 11.0.029
05/09/10 8.00am --> test garmin software...problem -- cannot find GPS devices. ask a HP shop, they say that the version are not compatible with my firmware.
05/09/10 2.00 pm --> keep trying to solve the problem...but still fail to solve
05/09/10 3.00pm --> found new problem, which my QWERTY keyboard problem. cannot press letter "h" on QWERTY keyboard, if i press it..it will hang....need to open the battery, then turn ON the HP again..
Pls help....I'm very sad now...tommorow want to go to the HP shop
QUOTE(payaluas @ Sep 5 2010, 09:10 PM)
my phone will hang when i press letter "h" on the QWERTY :-(
QUOTE(payaluas @ Sep 6 2010, 11:41 AM)
thank you guys....
i have google for the whole day about the problem.. i have sent to the phone shop, they format my phone, the H letter problem still occur...haish....
Thank god, I buy a Zitron set, today i will go to Nokia care to settle this problem..hope its not a big problem.
Did Nokia will replace a new set if my phone totally cant repair? Any comments? I'm quite afraid
QUOTE(payaluas @ Sep 6 2010, 02:27 PM)
yes...thank you mates..
I will update the status tonight ... hope everything going smooth...
QUOTE(payaluas @ Sep 6 2010, 05:09 PM)
really? what is your board problem? this is my 1st time using symbian phone..before this use windows mobile...
QUOTE(payaluas @ Sep 7 2010, 07:58 AM)
my phone are still at the nokia care...they said today my phone will ready..they suspect because of software problem.... if not, they need to change the board..unfortunately, nokia C6 are still new in market, so the board maybe not available yet.... :-( . Hope its not the board problem..pray for me...
QUOTE(payaluas @ Sep 7 2010, 09:42 AM)
ya....during my visit to nokia care yesterday, i 'curi2' tgk other customer complain..it shows that the problem is "Nokia C6 will hang when go to Messaging" . huhu...I think Nokia still updating the latest firmware to solve this problem. hope its not hardware problem.
I sent my phone yesterday, they said if software problem, today can settle and I can take my phone..
QUOTE(payaluas @ Sep 8 2010, 12:22 PM)
My phone still under repair yesterday. Today I call back to follow up, they said my phone maybe can ready by this evening. they change the board..its the hardware problem.... :-(
QUOTE(payaluas @ Sep 13 2010, 08:23 AM)
update from me :
my phone are ok now. NCC change the motherboard for me, the motherboard price are nearly the same with the whole phone price..huhu. I think C6 first batch will have problem, but since you get Zitron set - under warranty, it should be no problem and you should not worry about it. NCC will do everything for you. my schoolmate also bought C6 and got the same problem with me..huhu.
Thank god, my phone are great now...I'm satisfied with this phone, since this is a budget phone, what you can expect more...this phone is great!
This post has been edited by ping0613: Nov 8 2010, 09:56 AM