MODEM firmware problem

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Hello honorable SGT colleagues, according to my experience the Overcome P7300 v2.3.0 ROM is an amassing masterpiece that worked for me absolutely flawlessly with KJ6 modem at impressive CDMA/3G speeds… until after Google map app inadvertently hanged up due to the lost internet connection.. subsequent reboots and hard resets to the factory did not fix modem malfunction with the same error even after repeated rolls backs to several Russian v3.1 stock ROMs (PDA/CSC/PHONE) flashed by Odin 1.85 together with re-partitioning by p5_0614 PIT mapping table kindly provided by Nirogy325 at General Tab Questions - every ROM (either stock and custom) I used to try did not flash PHONE firmware properly, with baseband version always indicated as “unknown” in the system properties tray and of course, GSM/CDMA modem not operable.. the rest of COMM functions as is WI-FI and Bluetooth seems absolutely normal… does anybody have a clue what happened with my damned tablet and what might be possible cure? Will be extremely grateful for any advice

Try this cwm restock version..
I dont know if this file will be your solution,
But i dont have any issues with this..
Just give it try..
http://forum.xda-developers.com/show...22&postcount=5

Hello Suwandiapr, thank you very match for your support! Hopefully your system.tar will cure my problem with incorrectly flashed modem…I am unctuous to try it as the last remedy, but sadly could not download your file from the turbobit.net.. Would you kindly try to upload the file to the files.mail.ru with the link sent to my mail address alex.sologub@mail.ru ? Files.mail.ru is a popular Russian file exchange server with free hosting and free registration, it might also be useful for your future needs, to employ the server just create your ***@mail.ru account at files.mail.ru
With best regards Alexander

Just Make a CWM Version of ROM from this thread..
It is a CWM flashable zip that will install STOCK ROM on your tab..(without CWM and root of course in the end)
Support MultiCSC..
This includes the stock kernel, recovery image and Modem..include system.tar dump directly from mine..

Heres the instructions:
First you need CWM (overcome v5.1.2.6 or v5.5.0.4) for install this ZIP..
Download this file: http://turbobit.net/nc42yb1ig2s0.html
Put the file on your internal storage/sdcard
Reboot into recovery
Choose wipe data/reset Factory option before install
Choose from Install Menu -->Install zip from Internal storage
Choose zip from SDCARD
Select the P7300XWLA2_P7300OXXLA2_P7300XXKJ6.zip
Wait about 5-7 Minutes
After "Done", reboot.
Welcome to a completely stock XWLA2 with new modem

Scripts from alterbridge86 file from this thread..
http://forum.xda-developers.com/show....php?t=1315364
enjoy!!!
works on my GT P7300 and running well on daily use..

Do with your own risk, dont forget make a nandroid backup before you mess up..
Its Difficult to find uploader (free), i will update the link if you get problem with above link..

Okey bro, i will update the link.. Maybe tomorrow.. Coz im in hurry now.. Be patience my bro..
I do as soon as possible..

Update with hotfile, check again on my suggested post..
My data plan has a limit..its the best i could for you..
Hope it can solve your problem..