Hi All,
As all we know the WCDMA 800/850/900/1900/2100 Mhz is only a mirage, because we all know that the in example the JIAYU G4T is supporting ONLY WCDMA-IMT-2000 (which is the WCDMA 2100Mhz).
OK from my experience so far, I have flashed so many modem.img files, from TCL Idol X (S950), TCL Hero N3 and ChangHong Z9(HonPhone W33) and with no success, I'm only killing my reception because I SUPPOSE that the build of this stupit modem.img file is different or the JIAYU G4 BandMode is somekind of hardware locked only on WCDMA 2100, BUT WHY ???? Is there any posibility to unlock the WCDMA-GSM-900 Mhz, it is natively supported by the MT6589T and how the rest of the Manufacturers are able to implement it and to make it working ?
You'll ask your self, "why this guy is still trying by killing his phone so many times", well the answer is very simple, because I belive that there are no imposible things in the world and because I know how to recover my IMEIs and so on and I have even tried with the ChangHong Z9(HonPhone W33) Modem Database and AP Database and guess ... I was able to recover the IMEI and even I've used a real ChangHong Z9 IMEI and I was able to write it on my JIAYU G4T BUT ....
AGAIN with no success, there were no reception at all and I was having IMEIs and YES in the Engineer Mode in the Band Mode section there were only WCDMA-GSM-900 and WCDMA-IMT-2000 marked but there was NO reception again !!!
and that's why I'm begging you to tell me how to edit the modem.img file, because I was unable to uncompress it anyhow (tried ext4_unpacker_exe but without success, it's unpacking only mediatek factory rom ".img" files)
You'll ask why I want to edit and to try to create custom modem.img to support WCDMA-GSM-900Mhz, because those idiots from JIAYU and not only them, are going to release their MTK6592 and even the other upcoming 6595 with only WCDMA 2100Mhz support and that's very STUPID !!! And at all JIAYU have a great design !!!
Only in Europe there are 45 x Mobile Carriers with WCDMA(UMTS) 900/2100 Mhz builded networks (Including big mobile carriers like O2 in UK) and all of us which are using JIAYU or THL or even almost all of the rest chinesse clones or other manufacturers MTK based phones, we all are going to suffer if we are in such area which is WCDMA 900 coverage available only.'
I'll give you an example which is very clean example for good marketing: TCL
they have 4-5 different Idol X S950 modem.img files for their 4-5 different versions of the Idol X S950 model !!! YES I was able to check that fact by accidentally founding the source codes of the 4-5 different region specific TCL Idol X S950 phone and after that I was able to read that for every region there is different modem.img which is region specific in the needs of the customers mobile carriers.
You'll ask me "Why don't you buy Idol X" because the JIAYU is smaller it fits in my hand better, that's why and because I like the design more and because have an OTA updatable MIUI V5 on it which is working flawlessly, that's why.
Also why I'm going to buy the next MTK6592 based JIAYU S2, because it have even better design (139mm x 67.5mm x 6mm) than the Idol X+ S960T (140.4 x 69.1 x 7.9 mm), but again it will strugles in WCDMA 900 Mhz that's why I beg all of you developers to help me to figure how to redifine the modem.img to be custom configured by our needs ?
Thanks in advance and sorry for the long post
:fingers-crossed:
cpurage said:
Hi All,
As all we know the WCDMA 800/850/900/1900/2100 Mhz is only a mirage, because we all know that the in example the JIAYU G4T is supporting ONLY WCDMA-IMT-2000 (which is the WCDMA 2100Mhz).
OK from my experience so far, I have flashed so many modem.img files, from TCL Idol X (S950), TCL Hero N3 and ChangHong Z9(HonPhone W33) and with no success, I'm only killing my reception because I SUPPOSE that the build of this stupit modem.img file is different or the JIAYU G4 BandMode is somekind of hardware locked only on WCDMA 2100, BUT WHY ???? Is there any posibility to unlock the WCDMA-GSM-900 Mhz, it is natively supported by the MT6589T and how the rest of the Manufacturers are able to implement it and to make it working ?
You'll ask your self, "why this guy is still trying by killing his phone so many times", well the answer is very simple, because I belive that there are no imposible things in the world and because I know how to recover my IMEIs and so on and I have even tried with the ChangHong Z9(HonPhone W33) Modem Database and AP Database and guess ... I was able to recover the IMEI and even I've used a real ChangHong Z9 IMEI and I was able to write it on my JIAYU G4T BUT ....
AGAIN with no success, there were no reception at all and I was having IMEIs and YES in the Engineer Mode in the Band Mode section there were only WCDMA-GSM-900 and WCDMA-IMT-2000 marked but there was NO reception again !!!
and that's why I'm begging you to tell me how to edit the modem.img file, because I was unable to uncompress it anyhow (tried ext4_unpacker_exe but without success, it's unpacking only mediatek factory rom ".img" files)
You'll ask why I want to edit and to try to create custom modem.img to support WCDMA-GSM-900Mhz, because those idiots from JIAYU and not only them, are going to release their MTK6592 and even the other upcoming 6595 with only WCDMA 2100Mhz support and that's very STUPID !!! And at all JIAYU have a great design !!!
Only in Europe there are 45 x Mobile Carriers with WCDMA(UMTS) 900/2100 Mhz builded networks (Including big mobile carriers like O2 in UK) and all of us which are using JIAYU or THL or even almost all of the rest chinesse clones or other manufacturers MTK based phones, we all are going to suffer if we are in such area which is WCDMA 900 coverage available only.'
I'll give you an example which is very clean example for good marketing: TCL
they have 4-5 different Idol X S950 modem.img files for their 4-5 different versions of the Idol X S950 model !!! YES I was able to check that fact by accidentally founding the source codes of the 4-5 different region specific TCL Idol X S950 phone and after that I was able to read that for every region there is different modem.img which is region specific in the needs of the customers mobile carriers.
You'll ask me "Why don't you buy Idol X" because the JIAYU is smaller it fits in my hand better, that's why and because I like the design more and because have an OTA updatable MIUI V5 on it which is working flawlessly, that's why.
Also why I'm going to buy the next MTK6592 based JIAYU S2, because it have even better design (139mm x 67.5mm x 6mm) than the Idol X+ S960T (140.4 x 69.1 x 7.9 mm), but again it will strugles in WCDMA 900 Mhz that's why I beg all of you developers to help me to figure how to redifine the modem.img to be custom configured by our needs ?
Thanks in advance and sorry for the long post
:fingers-crossed:
Click to expand...
Click to collapse
OK there is no need to answer to my question, because I've been answered already:
by javum
Hi!
Except CPU there is another parts in the radio scheme (antenna, converters, etc). So you can't use another band mode frequency if it is not supported in hardware.
Lenovo produces the same devices for China and Europe. The system firmware (ROM) is fully compatible with both versions, but European versions has 900MHz 3G and Chinese version doesn't. If people flashes modem software from european to chinese devices - the can see 900MHz 3G in Engineer mode, but it don't work...
So I say "no" for whole you question. You can't make it supported...
:crying:
but the hope dies last:
http://www.gizchina.com/2014/02/22/jiayu-s2-receives-network-license/
hope that this sexy baby will have international versions of itself !!!
I am having similar problem.....
cpurage said:
Hi All,
As all we know the WCDMA 800/850/900/1900/2100 Mhz is only a mirage, because we all know that the in example the JIAYU G4T is supporting ONLY WCDMA-IMT-2000 (which is the WCDMA 2100Mhz)..........
:
Click to expand...
Click to collapse
Here's my problem....
I have a Blu Life One M phone. It's a rebadged and "Americanized" Micromax Magnus A117. So I can flash roms for the A117 and they work great, except for the data modem. My phone supports HSDPA+ 42Mbps band (850,1700,1900 UMTS). Problem is that the India version of the phone A117 only can support GSM band (850,900,1800,1900). SO, If I have the Blu roms flashed...I get a HSDPA (about half that high speed listed though but a big improvement). With any of the India roms (inc, Cyanogen and such) I can only get GSM band. Sloooow. The engineering menu shows choices to tick the boxes to include the other freqs I want...but they are grayed out.
So, to have all the nifty cool rom stuff, I have to go WiFi only. To go plain Jane gives me the high data speed.
Any way to get those choices un-grayed....or do I have the Rosetta stone of making these changes...or go back to stock and dream ???
Thanks for any info.....
BTw.. It is a MTK 6589t SoC.
Jeff
I have the same problem
blu-madmax said:
Here's my problem....
I have a Blu Life One M phone. It's a rebadged and "Americanized" Micromax Magnus A117. So I can flash roms for the A117 and they work great, except for the data modem. My phone supports HSDPA+ 42Mbps band (850,1700,1900 UMTS). Problem is that the India version of the phone A117 only can support GSM band (850,900,1800,1900). SO, If I have the Blu roms flashed...I get a HSDPA (about half that high speed listed though but a big improvement). With any of the India roms (inc, Cyanogen and such) I can only get GSM band. Sloooow. The engineering menu shows choices to tick the boxes to include the other freqs I want...but they are grayed out.
So, to have all the nifty cool rom stuff, I have to go WiFi only. To go plain Jane gives me the high data speed.
Any way to get those choices un-grayed....or do I have the Rosetta stone of making these changes...or go back to stock and dream ???
Thanks for any info.....
BTw.. It is a MTK 6589t SoC.
Jeff
Click to expand...
Click to collapse
Hi team, when I install stock ROM Cloudfone Excite Prime only support WCDMA IMT 2000, in my country 3G not connect.
When I flash BLU LIFE XL stock ROM I got this basebands 3G enable (WCDMA-PCS-1900, WCMD-AWS- 1700, WCDMA-CLR-650)
The cuestion is how can I change the baseband, what is the file than I change?
Please help me, thanks
I flshed Vibe x ROM on my lenovo p780 row_123.everything is fine.but only one SIM is working.it is showing operator name but no signal.saying only emergency calls.
RKC84 said:
I flshed Vibe x ROM on my lenovo p780 row_123.everything is fine.but only one SIM is working.it is showing operator name but no signal.saying only emergency calls.
Click to expand...
Click to collapse
Hi. Follow this link: http://forum.xda-developers.com/lenovo-p780/development/how-modems-t2757923
Go there, make full backup of your rom, then flash this modems am see what modem is good for you!
RKC84 said:
I flshed Vibe x ROM on my lenovo p780 row_123.everything is fine.but only one SIM is working.it is showing operator name but no signal.saying only emergency calls.
Click to expand...
Click to collapse
Have the same problem.
Chinese model, flashed ROW, and regardless of Vibe or not on top of it installed, my second SIM doesn't work.
After testing with different modems, I came to the conclusion that whenever I install a modem that works 2100 and 900 Mhz WCDMA for SIM1, then SIM2 refuses to work.
After installing a modem for 2100Mhz WCDMA only, it should work.
See my post http://forum.xda-developers.com/lenovo-p780/help/test-radios-4-row-t2761568/post52947423 for a list of modems I had problems and no problems with.
Does that solve the problem ?
Hi everyone,
I have the LG Optimus L90 D415 from T-mobile. I'm in Europe using a different carrier and I can only connect to 2G (EDGE). Following the instructions I found, I configured properly the APN and tried to change the radio to "Euro band" from the *#*#4636#*#* menu but when I press the option "Select radio band" I don't have any options to choose, just the title "Set GSM/UMTS band".
I didn't find any custom ROM to check if it changes. Can you please help me?
Thank you in advance.
It may be under the menu found via 3845#*415# ,
Theres radio settings to enable band 2100. Not sure if it will work without a new anntena in your phone. Tmobile US do not use full 2100 band but a cdma subset.
Failing that i think your wasting your time with roms. Try updating the firmware for your anntena. Perhaps the firmware from the 405 model but update firmeware with cation
Did u get it working ?
jasonblg said:
It may be under the menu found via 3845#*415# ,
Theres radio settings to enable band 2100. Not sure if it will work without a new anntena in your phone. Tmobile US do not use full 2100 band but a cdma subset.
Click to expand...
Click to collapse
After enabled is it possible disable it?
hi
Did it work?
The T-Mobile version of the phone does not support UMTS (3g) on band 1 for the 2100 Mhz frequency as many European and other countries use, so that's most likely why there aren't any options, because nothing you could change would make a difference.
Help
Any solution for enabling WCDMA 2100 band 1 on LG-D415 ?
So, I recently bought an Elephone p8000. This is my first time buying an unlocked phone, and I didn't know that one needed specific bands in order to use the various networks.
What I want to know is, is there a way to unlock more bands on the mt6753, or specifically for the p8000?
I've found a similar guide for phones using qualcomm, so I hope that something like that exists for the mt6753.
Unlocking more bands on MT6753
\I have a similar issue. Anyone have a solution to this?
Hi friends,
Actually i brought this from india and now i'm in kenya..Here airtel upgraded there network to 4G...Before i'm able to access 3g and currently i'm using using same...My problem is that its not detecting airtel 4G....Whn i checked the supporting bands i can see that only kiw l21 is supporting B20 band...So kindly can anyone help me to enable B20 or can i change my phone l21...Kindly please advice....
Anoop Prabhakaran
Please help
please any idea??????????