[GUIDE]Baseband Updating/Downgrading for Karbonn A5/A7,A7+ and Walton Primo

avinash1331 · Feb 5, 2013

Dear Sir, i need ur help i am Karbonn A5 user i update my device with baseband V005 and flash ics now ics working smothly without any bugs only thing is photo viewing quality is poor as compare to GB rom so i want to switch to again GB so for that i trying to downgarde my bsaeband but nothing will happen for that i try basebandv3055,v3025,v3070.
please help me

sahil3x1 · Feb 5, 2013

when i try to downgrade now that is stuck on NPRG Write

Please Help me i want to downgrade a7 plus

The Droid Master said:
so in this post i am going to explain how to downgrade baseband.Remember that the following steps are only for karbonn a5 and walton primo,spice mi355.

HOW TO DOWNGRADE BASEBAND

rEQUIREMENTS
1.)stock baseband of our phone
DOWNLOAD HERE
2.)Rest every requiremwnts are same as for upgrading.(check post no.1)

pROCEDURE
1.)Unzip the baseband file in any folder.
2.)opent the FASTBOOT1.0.2.4
3.)connect your phone in QPST DOWNLOAD MODE.(power button+volume↓key).
4.)Rest all the steps you know as they are same for downgrading.(check the post no.1)

NOTE:you don't have to download the NPRG7627A.hex file which you did in upgrading.

What after downgrading??
just go HERE and flash this rom via CWN and ENJO(Y):laugh::laugh:

IF still having problems comehere and ask as many questions u wanna ask
ALL THE CREDITS TO arjun rajput and prasad12ka4 senior members of our thread for guiding:victory:

GuneetAtwal · Feb 6, 2013

sahil3x1 said:
when i try to downgrade now that is stuck on NPRG Write

Please Help me i want to downgrade a7 plus

don't try to replace the nprg file

GuneetAtwal · Feb 8, 2013

The Droid Master said:
don't try to replace the nprg file

remember to first flsh the stock ROM then flash any baseband

asif12141286 · Feb 13, 2013

help me to downgrade my walton primo..... your downgrade tutorial not work..

:crying:

GuneetAtwal · Feb 13, 2013

asif12141286 said:
help me to downgrade my walton primo..... your downgrade tutorial not work..

:crying:

hmm for downgrading you will have to flash your stock v3070 baseband

gadkari · Feb 13, 2013

The Droid Master said:
Baseband Update Tutorial

Congrats You have successfully updated your baseband

Your splash.img will disappear and blank screen will come don't worry just flash Recovery again(See Downloads

--------------------------------------------------------------------------------------------------------------------------------------------------------

--------------------------------------------------------------------------------------------------------------------------------------------------------

Baseband

Download Tool

Updated CWN Recovery

Himalayoee
Prasad
Arjun Rajput
Me

Thanks for providing ics stuff,please suggest best ics rom for my A5(800mhz).

GuneetAtwal · Feb 14, 2013

gadkari said:
Thanks for providing ics stuff,please suggest best ics rom for my A5(800mhz).

Go here you will get updates on ICS daily and ifo abour ROMs http://xdaforums.com/showthread.php?t=2143522&page=6

sayeedku · Feb 19, 2013

Need help Walton Primo

When I am downgrading base band in my Walton Primo Phone somehow an error occured . But now it show "download fail" message every time when I try to Downgrade or Upgrade my base band. I will try for several times but the same result come out. But I have done this work several times before. Someone help me please I am in a fix.........

shubhamsb · Feb 23, 2013

Re: Baseband Updation for Karbonn A5 and Walton Primo

Please give the link to download tool as well as tje baseband version v000003

Sent from my Karbonn A5 using xda app-developers app

GuneetAtwal · Feb 23, 2013

shubhamsb said:
Please give the link to download tool as well as tje baseband version v000003

Sent from my Karbonn A5 using xda app-developers app

its there on First page first post

rohithanda · Feb 23, 2013

V000001 or V000003

Can someone tell me which baseband is the latest one??? V000001 or V000003

GuneetAtwal · Feb 24, 2013

rohithanda said:
Can someone tell me which baseband is the latest one??? V000001 or V000003

03 one

AJEESH0007 · Feb 25, 2013

baseband updation error

buddy, during clik all downloads in primo download it shows " open port error" pls help i want to upgrade my karbon a5 tp 4.0.4 . ur rom not taking in my phone

---------- Post added at 04:05 AM ---------- Previous post was at 04:00 AM ----------

port error :crying: pls help

rohithanda · Feb 26, 2013

Cant update from 000001 to 000003

I am trying to upgrade to latest ics baseband 000003 from 000001. i m using fpt ics rom..
I m getting the following error... even tried deleting nprg file from baseband folder... still wont update..

AJEESH0007 · Feb 27, 2013

baseband updation error

shows port error 20

GuneetAtwal · Feb 27, 2013

AJEESH0007 said:
shows port error 20

drivers are not properly installed thats it

spg89 · Feb 28, 2013

The Droid Master said:
dont say only press it also

please mention that whenever you deal with baseband,the google adb driver gets autometically deleted from the pc.after that you try to downgrade or upgrade,bp download will fail.also cannot install the cwm again.bur after keep pressing the volume up and power button,the red screen appears,then connect the phone.the adb drivers again get installed.after that,remove battery,do any thing like dealing with baseband or installing cwm

---------- Post added at 10:49 PM ---------- Previous post was at 10:48 PM ----------

rohithanda said:
I am trying to upgrade to latest ics baseband 000003 from 000001. i m using fpt ics rom..
I m getting the following error... even tried deleting nprg file from baseband folder... still wont update..

read my last post..i also faced the same problem.nobody answered it,i found out..

fatur06 · Mar 1, 2013

spg89 said:
please mention that whenever you deal with baseband,the google adb driver gets autometically deleted from the pc.after that you try to downgrade or upgrade,bp download will fail.also cannot install the cwm again.bur after keep pressing the volume up and power button,the red screen appears,then connect the phone.the adb drivers again get installed.after that,remove battery,do any thing like dealing with baseband or installing cwm

---------- Post added at 10:49 PM ---------- Previous post was at 10:48 PM ----------

read my last post..i also faced the same problem.nobody answered it,i found out..

how to recover..?, i got same problem . after NPRG download error, and can not enter menu again. now only blank RED. please help step by step..

spg89 · Mar 1, 2013

fatur06 said:
how to recover..?, i got same problem . after NPRG download error, and can not enter menu again. now only blank RED. please help step by step..

oh boy..i told that first remove battery now insert it.then keep pressing the volume up and power button until the red screen appears.if u have done anything with baseband,then your phone will get stuck at red screen.then connect your phone.u will see that a popup installing drivers.after installing check at device manager ur adb drivers will come again(after updating it had gone).now remove battery,insert again.now u r able to do any thing again(like updating or downgrading baseband or installing cwm)

[GUIDE]Baseband Updating/Downgrading for Karbonn A5/A7,A7+ and Walton Primo

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