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Good news is that SPR L720 works on OMH very well with data. I received a few phones last week which were shipped on 4.3 OTA. Rooted, flashed phil's recovery and updated to NAE 4.4 modem.tar, flashed rooted stock TW NAE 4.4 flashable ROM.zip from recovery and it reads any RUIM. Have also tested other international CDMA SIM cards on this baked tutorial. Chinese tutorial:- http://www.cdmamod.com/thread-1840-1-1.html the files:- http://pan.baidu.com/s/1hqsUCJU Note 1:- that GSM unlocking requires MDC modem, s4 unlocker and such, and that hidden menu may not be operable on 4.3/4.4 so please make sure its done before this procedure. The chinese tutorial states that a stock MK2 odin file is used, and then the 4.4 zip and the NAE modem, but i have not updated to 4.3 bootloader. Note 2:- OMH/GSM/NV mode (3 networks as called in China) also works on MDC base and CM roms. *Please use your favourite CDMA software to make the phone RUIM only/RUIM if avail before proceeding to this topic. *GSM usage by this method is under development. The entire tutorial is experimental and aimed towards achieving stock like performance.

Samsung Galaxy US Cellular R530U can/will brick while on 4.3 MJA if tried downgrading by Odin or recovery or by flashable zip MB1/MD4 firmware by SD card. Firmwares contain sbl1, sbl2, tbz and some other components fatal to the bootloader. The handset will be dead completely leading to the only option of JTAG Riffbox. It is also seen than pin-outs of JTAG to R530 are not easily mappable. Here is an emergency restore to boot into download mode by which you can re-flash the stock R530uvxubmja tar odin file. Things needed are:- 1. A 16GB class 10 SD card (for 16GB handsets, 32GB for 32GB handsets), a 16GB class 4 of Transcend or Sandisk also works..Tested !! 2. Download this file in a folder http://www.4shared.com/zip/l6N9muH_ce/win32diskimager-v09-binary.html 3. Insert the SD card into the PC, we are making image partitions, SD can get corrupt or unusable, card reader will get damaged. 4. Download this resurrection file extracted by JTAG https://app.box.com/SCH-R530U (a 32GB JTAG mmblk0 file will be uploaded soon by me 5. Open the unzipped application of the extracted folder and select the JTAG bin file and write to the SD card 6. Remove the SD card and put it in the R530, remove the battery, insert a good power adapter, re-attach the battery 7. Phone will start charging in off state, get into download mode and download this tar file http://upload.teamuscellular.com/5D1?d=1 8. Your phone is saved Edited:- more details added.

For this process, HTC One Sprint M7WLS should be rooted and S-off. Google it for the procedure till here. 1. Open your favourite CDMA software and make the RUIM config as RUIM if avail 2. Boot the phone into fastboot and type the following commands a. fastboot oem rebootRUU b. fastboot flash zip CT3G_radio.zip c. fastboot reboot Link for the radio https://drive.google.com/file/d/0BylQ6RZ2mIP_UjBkcWd3T1lITFk/edit?usp=sharing 2. http://www.4shared.com/zip/Wh-_Fvsuce/CT3G_radio.html Your phone will detect CDMA SIM network upon reboot.

Verizon has launched a ditto copy of Samsung Galaxy Stellar named Samsung Legend model no. i200.PP. This phone is marketed for their so called prepaid service. US sellers are getting confused or deliberately shipping i200.PP in place of the original Samsung Stellar i200 as the handsets are identical. This handset does not have a SIM card slot and the other distinct difference is in the MEID series. This phone has a series starting from A000XXXXXXXXX. Phone ships via 4.1.2 so hidden menu and other fixes and tweaks stop here. To map the diag port, download the attached utility. Use your favorite CDMA tool and a Samsung i605 password and the SPC will be displayed. Note that the SPC of this phone is not 000000 though its Verizon. All data parameters have been successful in programming this handset on our network. PhoneUtilss.apk

Verizon Pantech Breakout is an unlocked CDMA OMH SIM handset where all SIM cards support calls and sms. There is no hidden settings involved in achieving calling and messaging. However it does not support data on RUIM of Reliance but with some minor tweaking, Tata Indicom SIM supports 3G/EVDO internet. Steps:- 1. Root the phone in few steps following this guide and the attached files. http://www.techychat.com/2013/05/28/root-pantech-breakout/ 2. After successful root, download and install root explorer 2.16 or older 3. Replace my attached build.prop in system folder and apns-conf.xml in system/etc folder, set all permissions and reboot. 4. Dial *#*#4636#*#* and select CDMA only Note:- Data on this device only works in evdo areas. there is no 1x support available on this phone. data icon will remain 1x in evdo areas and no data will work in 1x areas. Evdo speed is recorded on this 1x icon. After putting this settings, there will never be any need to change/modify any setting even after changing to any number of SIM cards. Also note that there is no success on Reliance RUIM for data on this phone till date. apns-conf.xml build.zip