Root Best Radio, NV WiMax and PRI for any ROM

I think people are only downgrading to PRI 1.70 if they are having problems with the 1.90, for instance 1 problem I have heard of is battery drain. Other than that I have no idea what versions have the best signals, I havent really noticed a difference in signal stregnth to be honest

If you're on a 3.70 ROM, you need to use the latest Radio. You *can* use a different kernel other than a HTC stock one, then downgrade the radio to the previous version, but it's unlikely to help you, especially if it was already bad before the radio update. It will more than likely just make things a little unstable.

Unfortunately, if you have bad signal where you're at, no amount of flashing different radio versions will help you. You might try, however, updating your PRL and Profile. Have you tried that?

menu->settings->system updates->update profile/update PRL.

I've noticed things take a little longer upload and download since updating my radio. When opening apps that refresh like FB and Phandroid it takes longer update.

I updated every radio, however, 1.90 was a major fail for me. Downgraded to 1.77 and everything is great again. Battery was terrible, phone would never sleep so uptime and awake time almost identical. Not sure how a PRI upgrade would cause that problem, but that is what I noticed.

Looking to downgrade my PRI. where can I find the files and how to??

djkleric said:

Looking to downgrade my PRI. where can I find the files and how to??

Click to expand...

You can get it here:

[ Radios ][ 12-17 ] All EVO Radio, WiMAX, PRI, NV & HBoot versions - xda-developers

Are you sure you need to?

akazabam said:

You can get it here:

[ Radios ][ 12-17 ] All EVO Radio, WiMAX, PRI, NV & HBoot versions - xda-developers

Are you sure you need to?

Click to expand...

I want to see if that will solve the issue I am having with streaming. I was able to stream just fine before tonight. Now I can't at all.

Check the proXy settings. ## 3282# you will need your msl code. You can get it with msl reader from the market. Change the proxy and rstp settings to 0

More details in the sirius and pandora threads

I think I already know the answer to this but just want confirmation. Im running Miks 4.3 and Netarchy 4.3.1, and the latest radio combo 1.90. What's the best way to revert my radio combo back to 1.77? I want to see if it corrects my battery drain issue. Do I just create a nandroid then flash the 1.77 combo?

Edit: After looking on xda I didn't see a 1.77 combo pack. Do I just flash the 1.77 PRI file?

stevcha said:

I think I already know the answer to this but just want confirmation. Im running Miks 4.3 and Netarchy 4.3.1, and the latest radio combo 1.90. What's the best way to revert my radio combo back to 1.77? I want to see if it corrects my battery drain issue. Do I just create a nandroid then flash the 1.77 combo?

Click to expand...

Don't flash the combo, just flash the single PRI 1.77 update zip. You don't want to downgrade you radios while you're at it. A nandroid backup can't hurt, but remember that radios, pri, etc. aren't backed up in a nandroid backup, so if something breaks, it's unlikely that trying to restore a nandroid backup will fix it. That's, of course, not always the case, but it's just something you should keep in mind. You're unlikely to run into too many problems just downgrading your PRI.

akazabam said:

Don't flash the combo, just flash the single PRI 1.77 update zip. You don't want to downgrade you radios while you're at it. A nandroid backup can't hurt, but remember that radios, pri, etc. aren't backed up in a nandroid backup, so if something breaks, it's unlikely that trying to restore a nandroid backup will fix it. That's, of course, not always the case, but it's just something you should keep in mind. You're unlikely to run into too many problems just downgrading your PRI.

Click to expand...

Thanks!! Is there a way to backup and restore the old radio in case something goes wrong?

stevcha said:

Thanks!! Is there a way to backup and restore the old radio in case something goes wrong?

Click to expand...

No, just keep both PRI 1.77 and PRI 1.90 flashable zips on the root of your card so that you can reflash what you had before just in case you need to.

Is there a need to wipe cache and dalvik for this?

stevcha said:

Is there a need to wipe cache and dalvik for this?

Click to expand...

*probably* not, but it sure can't hurt to do it anyway .

Just flashed 1.77 without issue. Now lets see if it corrects the battery drain issue. Thanks again!!

No problem. Let me know if that helps at all or if you need anything else.

What exactly does the PRI software do?

What about the NV, should that also be flashed along with the 1.77 PRI? Also, exactly what IS the NV? I've searched and cant find any info on it.

First I am a compulsive but careful flasher. (Sounds like an AA meeting, "hello, I'm Mike and I'm a flashaholic"). My question though is playing around with PRI and NV files to see if either results in better speeds, battery life etc. I'm currently on Myn's RL5 as my daily and Warm Z nightlies for play time. Note: everything works on both sides but I don't see the excellent 4G speeds others have noted anywhere I go. I can connect and even get "excellent" connection status. One place I'm looking at a tower a block away but still get crappy 4G data rates. (1.2 DL 0.6 Up) is as good as it gets. My 3G signal is much more consistent (avg. 1.6 down .90 up) and pages load smoothly with no lag albeit not as fast as I'd like them to. Here is what I've tried so far.

Starting with all new radios, PRI and NV (1.90 series). Battery life was pretty poor and awake time vs. up time were equal. Noting that was a problem, I tried to downgrade PRI. Okay so that corrected the problem, now the phone sleeps properly again. But there was a noticeable deterioration in data speed and stability especially 4G.

So next tried the MSL # code thing. Actually lost a little of my the precious speed margin I already had. But I left it alone.

Next I tried to downgrade NV. That did not allow me to update my profile. It would just sit on the message and do nothing. (This is matching 1.77 PRI to 1.77 NV). Uptime and awake time became equal again (not good) so.....

So I went back to mismatch PRI 1.77 and NV 1.90. Battery life better and phone sleeps right again. Data speed back to where I started.

So my question for you flashaholics. Where is your sweet spot? I mean, I know there are a lot of variables and my perceived slow 4G data may simply be a manifestation of 4G in my city. It also could be the eternal tinkering in me which has me playing with things almost nightly. My plan as soon as Myn gets done with Warm Z release is to go to rehab and stay put on a setup (except for themes and mods can't help it) after a clean factory reset, data wipe etc. But as far as radio, (moot point I'll have to stay on newest), PRI vs. NV combo, MSL # code. Where are you and what works best for you?