EDIT: See Post #18 for a short and very basic explanation of how PRL files are constructed/work.
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I think it is, for now... I'm done with PRLs for now...
1) First, I took 60683.prl and edited it down to ONLY include my GEO 4 area to make it easier to manage/edit. I ALSO set "Preferred Only" to FALSE. Flashed the cut down version and everything worked fine... No better reception or anything... but it worked... Why? Because (as open signal showed), I was connecting to the exact same SID (4120) and same tower...
2) Next, I set all the Sprint PCS SIDs to the lowest priority in the GEO 4, which placed ALL available NON-Sprint SIDs at a higher priority... The theory being that my phone SHOULD connect to ANY available tower that it comes to ahead of the Sprint Towers... RESULT: It still connected to SID 4120 even though I KNOW there are Alltel towers in reception range.
So... at this point, I am wondering how to get my phone to connect to ANY other tower.... or IF it can be done.... So...
3) I further edited the file to REMOVE the Sprint System entries from the file altogether... So, NOW the remaining file is ONLY the NON-SPRINT carriers System/ACQ info that is included in the 60683 (and essentially the same as 11115). Flashed it... Then I READ it back tot he PC to make sure it was the exact file I intended to send.... It was.
Results? No signal... phone could not or would not connect to ANY tower...
My analysis: I don't think the Prevail can use any NON-Sprint stuff... at least mine won't. I KNOW there are Alltel and/or Verizon towers all over the place here... My neighbor is a Verizon customer and gets super signal and data.
My conclusion is supported by my analysis of the 61007.PRL (current BoostMobile PRL)... This file contains ONLY SprintPCS SIDs... and these include SIDs are partially restricted by the removal of certain NIDs with Negative entries on the Sytem List.
So... I'm done with the PRL chase until we figure out why the Prevail won't connect to non-sprint towers.... Is it in the firmware? (Something we MIGHT be able to change with CDMA Workshop) Or is it in the ROM or other ware loaded on boot? Something we could change (maybe) by editing something...
Sorry folks... I thought that I was going to be able to do something good for us by chasing down the PRL Tools and learning how the files are structured and work...
________________________________________________________________
I think it is, for now... I'm done with PRLs for now...
1) First, I took 60683.prl and edited it down to ONLY include my GEO 4 area to make it easier to manage/edit. I ALSO set "Preferred Only" to FALSE. Flashed the cut down version and everything worked fine... No better reception or anything... but it worked... Why? Because (as open signal showed), I was connecting to the exact same SID (4120) and same tower...
2) Next, I set all the Sprint PCS SIDs to the lowest priority in the GEO 4, which placed ALL available NON-Sprint SIDs at a higher priority... The theory being that my phone SHOULD connect to ANY available tower that it comes to ahead of the Sprint Towers... RESULT: It still connected to SID 4120 even though I KNOW there are Alltel towers in reception range.
So... at this point, I am wondering how to get my phone to connect to ANY other tower.... or IF it can be done.... So...
3) I further edited the file to REMOVE the Sprint System entries from the file altogether... So, NOW the remaining file is ONLY the NON-SPRINT carriers System/ACQ info that is included in the 60683 (and essentially the same as 11115). Flashed it... Then I READ it back tot he PC to make sure it was the exact file I intended to send.... It was.
Results? No signal... phone could not or would not connect to ANY tower...
My analysis: I don't think the Prevail can use any NON-Sprint stuff... at least mine won't. I KNOW there are Alltel and/or Verizon towers all over the place here... My neighbor is a Verizon customer and gets super signal and data.
My conclusion is supported by my analysis of the 61007.PRL (current BoostMobile PRL)... This file contains ONLY SprintPCS SIDs... and these include SIDs are partially restricted by the removal of certain NIDs with Negative entries on the Sytem List.
So... I'm done with the PRL chase until we figure out why the Prevail won't connect to non-sprint towers.... Is it in the firmware? (Something we MIGHT be able to change with CDMA Workshop) Or is it in the ROM or other ware loaded on boot? Something we could change (maybe) by editing something...
Sorry folks... I thought that I was going to be able to do something good for us by chasing down the PRL Tools and learning how the files are structured and work...