[Tutorial][On The Fly PRL Change]PRL Changes Without a PC

letmeputdatipin

Senior Member
Nov 5, 2011
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I am running viperrom and it has EPST. My steps were to clear MRU under modem setting then selecting 56015 prl twice and then it restarts. I then update the profile and select CDMA only and then roaming only. Under setting it shows the PRL as 56015 but only pulls in 1x speeds for some reason now. 3G worked the first time I flashed it but haven't had any luck since trying to get it back on.
Curious, why would you clear your mru? I've never done that and my 3g roaming works! What does it do when u clear it?
 

Sloth

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Apr 23, 2012
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Xda-Dev,NV
I am running viperrom and it has EPST. My steps were to clear MRU under modem setting then selecting 56015 prl twice and then it restarts. I then update the profile and select CDMA only and then roaming only. Under setting it shows the PRL as 56015 but only pulls in 1x speeds for some reason now. 3G worked the first time I flashed it but haven't had any luck since trying to get it back on.
If you choose CDMA only I believe it uses Sprint towers don't quote me on that though

Sent from? :p
 
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jeffreykime

Member
Jun 17, 2010
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Moron question here... but I could do this on my gs3. My one is not rooted. Do I need to be rooted to do the ##778?

I do it and nothing happens.

Sent from my HTCONE using xda app-developers app

---------- Post added at 07:10 PM ---------- Previous post was at 06:37 PM ----------

Never mind. Looks like I have to root unless someone has another work around.

Sent from my HTCONE using xda app-developers app
 

naturecannon

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Oct 27, 2007
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Moron question here... but I could do this on my gs3. My one is not rooted. Do I need to be rooted to do the ##778?

I do it and nothing happens.

Sent from my HTCONE using xda app-developers app

---------- Post added at 07:10 PM ---------- Previous post was at 06:37 PM ----------

Never mind. Looks like I have to root unless someone has another work around.

Sent from my HTCONE using xda app-developers app
Your missing a # after the 8. without it you will not see EPST. Could be a typo on your part....just sayin cause we all have wtf moments now and then.
 

celder187

Senior Member
Feb 17, 2013
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So I am new to this if I update to 56015 and switch to roam only I will roam on Verizon 3g? If so when I switch back to automatic or home only it will revert back to sprint service or do I have to update prl to get back to sprint. I only ask because I always force roam at work with slow 1x Verizon and switch back when I leave work to avoid too much roaming data.

Sent from my jacked HTC One!!
 

letmeputdatipin

Senior Member
Nov 5, 2011
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So I am new to this if I update to 56015 and switch to roam only I will roam on Verizon 3g? If so when I switch back to automatic or home only it will revert back to sprint service or do I have to update prl to get back to sprint. I only ask because I always force roam at work with slow 1x Verizon and switch back when I leave work to avoid too much roaming data.

Sent from my jacked HTC One!!
Yes, u should roam on 3G it does for me!
 

celder187

Senior Member
Feb 17, 2013
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ok... so I selected the prl and tap commit changes. Now it gets stuck on the please wait while commiting change for a minute and then comes up "radio no response.can not enter low power mode" Anyone have any clue what I am doing wrong. I tried 56014 and 56015 both were the same. I am running ecliptic one 3.7 and build.prop did not need to be editted as it was already ro.build.type dev out of the box.
 

Sloth

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Apr 23, 2012
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ok... so I selected the prl and tap commit changes. Now it gets stuck on the please wait while commiting change for a minute and then comes up "radio no response.can not enter low power mode" Anyone have any clue what I am doing wrong. I tried 56014 and 56015 both were the same. I am running ecliptic one 3.7 and build.prop did not need to be editted as it was already ro.build.type dev out of the box.
I'm on ElipticOne v3.6 I went to setting/system updates and did a PRL update it gave me 55016
I then went to the dialer and used the code ##778# and updated my PRL to 56015
IDK what the problem could be
 
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rtoodeetwo

Senior Member
Feb 27, 2010
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Help please.

Okay I don't know what I'm doing wrong but after updating my PRL to 56015 and updating my profile, I go to the mobile data settings and changing to CDMA only and on roaming I change to roam only. After that the signal bar shows the roaming triangle but no data connection and I get a bunch of popup windows with code 78 error, i also get an exclamation triangle in my status bar saying " Data Roaming( You have lost data connection due to to leaving your wireless coverage". Sometimes eventually will connect to 1X only and and drop the connection after a while.and go back to error 78.

I tried with PRL 00001 and 00002 to test my phone with those and I'm able to connect forcing roaming to 1X speed only and no error pop ups. The phone shows like is roaming and the pull down bar says "digital roaming" if I change the roaming setting to automatic it will go back to 3G without roaming but like the warning on the OP says "I may be roaming without knowing"

After testing Saturday-Monday I have check my data usage and I only have 7 Mb of roaming, even tough I left 1X roaming with PRL 00001 for a couple hours playing tune in radio and some Pandora.

For FYI,

I'm running viper rom with s/off and one weird thing that I noticed is after I change the roaming mode to roam only and exit out the menu and comeback later I noticed that the roam only is no longer checked and actually all the 3 options are blank.
 

mill1321

Member
Feb 21, 2013
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Okay I don't know what I'm doing wrong but after updating my PRL to 56015 and updating my profile, I go to the mobile data settings and changing to CDMA only and on roaming I change to roam only. After that the signal bar shows the roaming triangle but no data connection and I get a bunch of popup windows with code 78 error, i also get an exclamation triangle in my status bar saying " Data Roaming( You have lost data connection due to to leaving your wireless coverage". Sometimes eventually will connect to 1X only and and drop the connection after a while.and go back to error 78.

I tried with PRL 00001 and 00002 to test my phone with those and I'm able to connect forcing roaming to 1X speed only and no error pop ups. The phone shows like is roaming and the pull down bar says "digital roaming" if I change the roaming setting to automatic it will go back to 3G without roaming but like the warning on the OP says "I may be roaming without knowing"

After testing Saturday-Monday I have check my data usage and I only have 7 Mb of roaming, even tough I left 1X roaming with PRL 00001 for a couple hours playing tune in radio and some Pandora.

For FYI,

I'm running viper rom with s/off and one weird thing that I noticed is after I change the roaming mode to roam only and exit out the menu and comeback later I noticed that the roam only is no longer checked and actually all the 3 options are blank.
I am on 00003 and got it to roam on verizon 3g. You might want to try that. Previously I was able to roam on 56014 but couldn't get it to stick after try sprints new prl to see if 4g was finally up to par in my area. I am on viper rom. Good luck.