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Radio versions - any difference between H and U?

I just got finished with rooting my phone and installing HardSPL, but I've noticed my baseband / radio version has changed since I manually flashed it. Following the directions on the CyanogenMod wiki, it specifies to flash to 62.50S.20.17H_2.22.19.26I (which I did). Now I haven't tracked when or where along the line this changed, but looking at my baseband version now (after installing HardSPL) I now see my baseband version as 62.50S.20.17U_2.22.19.26I, which I understand is the development version of the "H" rom listed above. This would make sense since HardSPL is based off of the stock dev SPL.
Are there any differences between H / U which would make it worth flashing back, or should I leave well enough alone and be glad I didn't brick this thing?

[Q] What's the current radio for TMob?

Can someone who hasn't modified the radio tell me which one is the current one from T-Mobile. I tried manually updating the radio to the latest one (10.58), and it's horrible on battery, and want to go back to whatever was last pushed out by T-Mobile.
It's under:
Settings -> About Phone -> Software Info -> More -> Baseband version
Thanks.

I believe it's this one: RUU_Pyramid_TMOUS_1.50.531.1_Radio_10.56.9035.00U_10.14.9035.0
Did you update the matching RIL for 10.58? RIL's found here:
http://forum.xda-developers.com/showthread.php?t=1202867
Per this thread, the best radio for TMOUS is 10.56 with the matching RILs from the above links. But every phone is different, best to test and see which works for you. http://forum.xda-developers.com/showthread.php?t=1418043

Which radio do I have?

I downloaded and flashed radio 10.58.9035.00U_10.15.9035.02_2. The installation was successful as far as I could tell. However, when I boot into recovery it reports the radio as 10.14.9035.02_2. The Baseband version (which I assume is the radio) listed in the phone's software information is 10.58.9035.00P_10.15.9035.02_2.
So which is correct and why are there different versions listed?

stev32k said:
I downloaded and flashed radio 10.58.9035.00U_10.15.9035.02_2. The installation was successful as far as I could tell. However, when I boot into recovery it reports the radio as 10.14.9035.02_2. The Baseband version (which I assume is the radio) listed in the phone's software information is 10.58.9035.00P_10.15.9035.02_2.
So which is correct and why are there different versions listed?
Click to expand...
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Hi,
Go to Settings>about phone>software information>more>baseband version.
This will show the correct radio installed.
The one in hboot,always seems to show one number behind.

OK, thanks for the reply. I was hoping hboot was wrong.

[Q] how to flash new radio ? too many options..

my radio is old and signal is weak in most areas, need to upgrade but there is too many radios and a few tutorials, one option is to flash it with terminal via usb here is the main thread http://forum.xda-developers.com/showthread.php?t=1178001
the second option is to flash it as you flash hboot by bootloader. thread http://forum.xda-developers.com/showthread.php?t=1312144
Q wich one is the right one ?
Q2 wich radio to use ? (i guess the latest from [RADIO] HTC Desire S Radios [PG88IMG.zip] (Updated: 21 Oct 2011) thread)
im using android 3.5 - HTC sense 3.0 - kernel 2.6.35.10 htc kernel - radio 20.28I.30.085AU_3805.06.02.03_M - Hboot 7.00.1002 | Reengineered 2.00.002
tnx for your help !

There is no such thing as "old radio", and newer radio doesn't mean better signal.
Both of the options lead to exactly the same result and achieve exactly the same thing in exactly the same way, it's just that one is assuming you're knowledgeable enough to put the file on SD card yourself and the other doesn't assume even that.

[Q] Matching RIL for 20.76.30.0835U_3831.19.00.110

Hello, I installed the (hopefully) newest firmware from this thread: [RADIO] [FIRMWARE] ICS firmware and radio from WWE RUU
Afterwards, I installed CM10 by nk111, which is running great, besides problems with the download speed on mobile network. The signal is great, as networkcoverage is as well. But the download, even on H (4G equivalent) is very, very slow.
The radio/baseband combination, which came with the new firmware, is: 20.76.30.0835U_3831.19.00.110
Does somebody know, if there is a matching RIL out there? Or are there different radios, which I could try? Maybe even the "old" GB radios?

I checked RIL on my phone manually, which is: HTC-RIL 4.0.0034HM
You can check it via adb (or terminal emulator) with
Code:
getprop "gsm.version.ril-impl"
Did nobody else mess with these things? Which RIL/baseband combination are you using?