Basic questions from a noob. - HTC Desire X

Hello guys,
I've started reading about roms, flashing, customs roms, recovery images, mods and so on since I got my first android phone a few days ago, but my had is gonna explode very soon. There are so much information, tutorials, devices, wikis. New questions are coming up all the time. So I am starting this thread to ask some noob questions.
The first thing is about RUU. I really can't understand the whole concept. I receive my updates OTA. From where you get this RUU's. In this threadhttp://forum.xda-developers.com/showthread.php?p=32073156 in the first few pages people are talking about porting the RUU. What do you mean by that. I understand that RUU's are connected to CID, my phone is not branded or simlocked. But somewhere on the threads I read that the only available RUU is for Europe, but doesn't include Poland. I am also from Eastern Europe - Bulgaria. I've understood how to backup and flash my system.img, but before I repace the stock recovery.img do I need to back it up too, and how?
I'll be really grateful if someone finds the time to answer my questions. If not, please do not delete the thread because in the mean time I am reading stuff, and maybe I'll find the answers but knew questions will arise
And the end, I am sorry for my bad English.
P.S What the hell is ProtoU? A nickname for Desire X?
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Sent from my HTC Desire X using xda premium

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MongoDB said:
Hello guys,
I've started reading about roms, flashing, customs roms, recovery images, mods and so on since I got my first android phone a few days ago, but my had is gonna explode very soon. There are so much information, tutorials, devices, wikis. New questions are coming up all the time. So I am starting this thread to ask some noob questions.
The first thing is about RUU. I really can't understand the whole concept. I receive my updates OTA. From where you get this RUU's. In this threadhttp://forum.xda-developers.com/showthread.php?p=32073156 in the first few pages people are talking about porting the RUU. What do you mean by that. I understand that RUU's are connected to CID, my phone is not branded or simlocked. But somewhere on the threads I read that the only available RUU is for Europe, but doesn't include Poland. I am also from Eastern Europe - Bulgaria. I understood how to backup and flash my system.img, but before i repace the stock recovery.img do I need to back it up too, and how?
I'll be really grateful if someone finds the time to answer my questions. If not, please do not delete the thread because in the mean time I am reading stuff, and maybe I'll find the answers but knew questions will arise
And the end, I am sorry for my bad English.
P.S What the hell is ProtoU? A nickname for Desire X?
View attachment 1579563
Sent from my HTC Desire X using xda premium
Click to expand...
Click to collapse
Well, I can't answer all of your questions but can point you to some things.
RUU is Rom Update Utility, it is used to flash stock operating system to phone. It's a different type from OTA cause OTA usually only update some of the existing system files while RUU clears all partition of the phone and installs a fresh and clean OS to it. Also, OTA is performed directly from the phone, while RUU uses PC as a tool for it. Some RUUs can be obtained directly from htcdev site while most of them are leaked files obtained from different carriers.
If you're still in the position to don't know the difference between stock and custom recovery, what system partitions exist on your phone and also what backup of system means, I suggest you to read more and when you fully understand all that it's time to start rooting, flashing and playing with your phone in a way that can cause a permanent damage to it.
To know if you're compatible with RUU that can be obtained for our phone download app called Android Assistant from Play Store, go to tab Tools, choose a tool called System Info and the first info is about your OS version.
In my signature you have a link (How it works) with explanation how HTC Desire and Nexus One work, it's partly similar to our phone with a few difference, but basics are the same.
I hope I helped.
P.S. Proto U is a codename for HTC Desire X, cause every android phone has it. So Desire is Bravo, Desire S is Saga, Nexus One is Passion, Nexus S is Crespo, Incredible S is Vivo, One S is Ville... You can google it.