Originally Posted by yazar rafi
Help me pls....
1)how to know my s5's original bootloader and modem version?
2)what parameter we use to pick right stock firmware for my s5?(g900f klte)
For example are we choosing firmware on the basis of product code?
Try the free DevCheck
> System > Product code & you can also see in that panel your current bootloader & modem. See attached screenshot.
Then search for it on the web or in https://updato.com/firmware-archive-...r=desc&exact=1
For my SM-G900M on updato.com's respective download pages PDA is also the bootloader version and "Phone" is the modem/radio version.
The last 3 letters of the Product code is for the country or region code for which you can use the Select country filter in https://www.sammobile.com/firmwares/galaxy-s5/SM-G900F/
The most recent original Samsung firmware for your device model/region is more useful that the original firmware that was on it when it was shipped as it probably includes bootloader & modem updates..
Rule of thumb is usually the more recent the bootloader/modem combo the better but in some regions the most recent modem for that given region/country may work better.
Only actual testing in combination with your network provider's SIM can determine that which is hard to do objectively with so many variables like fluctuating cell tower signal & the data traffic it is handling @ a given moment, weather conditions, topography, indoor or outdoor testing, how you hold the phone with your hand covering the antenna located in the bottom of it or not, if you are facing the nearest cell tower, 3g-3.5g vs. 4g LTE, etc, etc!
Using an app like Network Cell Info Lite
or the information overloaded Network Signal Guru
gives much more info than the signal bars on the status bar or > Settings > System > About phone > Status > SIM status > Signal strength.
So there is no universal answer to the question what is better: most recent Samsung firmware for a device or more recent firmware for a device for a given region/country.
As linked 2 posts above yours as well as flashing method via Odin3 example: in the S5 LOS 15.1 dev haggertk's download folder Android-M folder
one can find some bootloader/modem combos for SM-G900F, SM-G900FD, SM-G900M, SM-G900T & SM-G900V.
The higher the last 4 alphanumeric characters, the more recent it is.