Develop Bugs

[Q] samsung drivers wont install

hey.
i followed the guide for rooting my galaxy nexus.
driver installation was alright, and then i switched to fastboot mode (green android) and then the device manager didn't recognize my gn (unknown device).
tried uninstalling and then reinstalling, tried "updating" it with various rar files i found on this forum and ofcourse i tries pdanet.
none of them worked. it was always unknown device.
then i had no choice and i removed the battery to boot it normal.
suggestions? thnaks

After installation, plug in your phone, look at your system tray for the USB icon, click it. It should show a status of installing more drivers. This can take awhile, and for a lot of people it seems to fail the last step, Android 1.0 drivers. Open control panel, system, device manager. Look for a yellow error icon. Click that, choose to install drivers manually and locally. Then select 'choose from list', find Samsung.
That should get you back on track
Sent from my Galaxy Nexus Bugless Beast 4.0.3 lte +franco#5

Were you able to unlock the bootloader? If you didn't do this, don't go installing any driver... be very careful. If you install the wrong driver in device manager, you'll screw it up. I installed the wrong driver on my main computer and I couldn't get the device manager to even recognize the phone :| I couldn't locate the right driver either because once I installed the driver, it renamed it. It was a huge pain and the only way I got this to work was by using a different PC with the correct drivers.
I have found this to be the best instructions for unlocking the bootloader. Most importantly, it includes directions on how to gain access to adb on your phone properly. Take your time and follow the instructions exactly...

Dutchy18 said:
hey.
i followed the guide for rooting my galaxy nexus.
driver installation was alright, and then i switched to fastboot mode (green android) and then the device manager didn't recognize my gn (unknown device).
tried uninstalling and then reinstalling, tried "updating" it with various rar files i found on this forum and ofcourse i tries pdanet.
none of them worked. it was always unknown device.
then i had no choice and i removed the battery to boot it normal.
suggestions? thnaks
Click to expand...
Click to collapse
I had the same issue, install pdanet and your phone will be recognized when in fastboot
Sent from my Galaxy Nexus using xda premium

i followed one of the main guides on this forum.
it says to install the pdanet drivers and then boot to fastmode via the volume buttons.
once i got into fastboot, the device was unrecognizable.
when i was still in normal boot, the device was recognized and it was all right. and yeah i turned usb debugging on.
how can i unlock the bootloader without installing drivers?
thanks

Dutchy18 said:
i followed one of the main guides on this forum.
it says to install the pdanet drivers and then boot to fastmode via the volume buttons.
once i got into fastboot, the device was unrecognizable.
when i was still in normal boot, the device was recognized and it was all right. and yeah i turned usb debugging on.
how can i unlock the bootloader without installing drivers?
thanks
Click to expand...
Click to collapse
silly question, but after booting to fastboot, you are using the fastboot.exe, and not adb? if you type "fastboot devices" does anything show up?

no, nothing shows up.
and thats clearly because the driver is not installed correctly.. i see a yellow sign in device manager.
what am i doing wrong? only thing i was different from the guide is that instead of typing adb reboot bootloader, i got into fastboot by pressing the volume buttons.

Dutchy18 said:
no, nothing shows up.
and thats clearly because the driver is not installed correctly.. i see a yellow sign in device manager.
what am i doing wrong? only thing i was different from the guide is that instead of typing adb reboot bootloader, i got into fastboot by pressing the volume buttons.
Click to expand...
Click to collapse
click open that yellow unrecognized device...manually choose drivers (don't do auto), and select from the list, you'll see samsung, choose the driver
that should install android 1.0...alot of people have gotten this error.
edit: another thing to keep in mind is, after installing the drivers, and fixing the device in device manager, it can still take a little bit to initialize. in your system tray there should be a usb icon, open that to see when the drivers are done

I am in the same boat. I tried for hours on 2 different Windows 7 laptops (both 64bit). I am trying to get Yakju from one of the derivitives (without unlocking the device).
Steps taken:
- Dloaded Samsung USB driver 1.4.6 & Installed: Did not recongnize in explorer or Odin (even Odin did not show a thing)
- Dladed PDA Net A302x64: Did not recognize in explorer or Odin.
Both times the GN is in Device/Printers and listed as having Android 1.0 driver. I try to manually update, but cannot seem to find driver in list (as it just has Android 1.0 driver listed). Any suggestions?

i didnt even see the "Android 1.0".. just "unknown device" all along..
i also tried on a different computer.. same issue.
about manually installing the driver.. i tried pointing him to a manual driver package i got from this forum.. it said its the same driver..
when im searching for "samsung" on the list, i dont see a relevant driver.

Well, i've saw someone else on here who was having driver issues, who also had installed both samsung & pda drivers...
uninstall both.
fresh install ONLY the naked drivers directly off samsungs website (http://www.samsung.com/us/support/downloads/verizon-wireless/SCH-I515MSAVZW -- if you're verizon, if not, you can search there). Do the install. Plug the phone in, it will start to install its usual crap. this is the long part. then, it will fail like you saw before. in device manager, you'll see the unrecognized device. Open, it will ask you to find drivers, choose "Browse", "Let Me Pick From a List", "Samsung", and then pick the driver with the date 11/25/2011
check to see if there are any other unrecognized devices in device manager, just to be sure you got em all. at this point, plugging in your phone should show the USB connected icon in the system tray. do you see this? If you click it does it say "Eject MTP"?

fastboot mode not working

hi everyone, i'm trying to install CM9 on my LT15i, i've tried using the CM wiki instructions and both the following guides...
androidauthority.com/xperia-arc-lt15i-root-android-4-0-ics-80265/
and
androidforums.com/rezound-all-things-root/506466-scottys-noob-friendly-root-guide-start-finish.html
the phone is already fully unlocked and has CM 7.2.0 anzu installed. i've tried simply using the clockwork recovery mod bootloader to wipe the phone and install CM 9.0.0, but on reboot the phone gets past the boot logo then just shows a black screen, so i assumed i needed to flash an appropriate ROM for CM9; this is where my problem begins.
every forum i've read about this process says i must enable usb debugging (done) and "disable fastboot" under settings>power, i do not have a "power" option in my settings and cannot find anything related to fastboot on the phone; although i'm not sure this is the problem. when android is running normally and i attempt to list devices with adb.exe on windows, it successfully returns the phone's serial number. when i shut the phone down, hold the menu button and plug in the usb cable, fastboot mode appears to work correctly as the LED comes on blue and "android adb device" appears in the windows device manager (i've tried installing the arc usb/adb drivers from various sources, they all seem to work correctly). but when i attempt to list devices after restarting in fastboot mode, adb.exe says it cannot find any device. fastboot.exe has not communicated with the device whatsoever, but i assumed i might need to get the adb.exe usb daemon/server running correctly first for this to work.
i did this process once already when i installed CM7, it was successful the first time and everything went smoothly. from what i recall i just did exactly as described above and fastboot.exe was able to find the device no problem. but that was a number of months ago, hopefully i'm just missing some obvious step.
cheers

WookieInHeat said:
every forum i've read about this process says i must enable usb debugging (done) and "disable fastboot" under settings>power, i do not have a "power" option in my settings and cannot find anything related to fastboot on the phone;
Click to expand...
Click to collapse
There is no such thing. And USB debugging is only required if you want to root stock ROM, every other action can be done without it.
WookieInHeat said:
although i'm not sure this is the problem. when android is running normally and i attempt to list devices with adb.exe on windows, it successfully returns the phone's serial number. when i shut the phone down, hold the menu button and plug in the usb cable, fastboot mode appears to work correctly as the LED comes on blue and "android adb device" appears in the windows device manager (i've tried installing the arc usb/adb drivers from various sources, they all seem to work correctly). but when i attempt to list devices after restarting in fastboot mode, adb.exe says it cannot find any device. fastboot.exe has not communicated with the device whatsoever, but i assumed i might need to get the adb.exe usb daemon/server running correctly first for this to work.
i did this process once already when i installed CM7, it was successful the first time and everything went smoothly. from what i recall i just did exactly as described above and fastboot.exe was able to find the device no problem. but that was a number of months ago, hopefully i'm just missing some obvious step.
cheers
Click to expand...
Click to collapse
Drivers, drivers, drivers.
If your phone is in fastboot mode, make sure drivers are installed. Proper drivers.
You do not need ADB server for installing a kernel.
Just open up Command Prompt and install the kernel with command
Code:
fastboot flash boot boot.img
.
Assuming boot.img is in the same folder as fastboot.exe.

Someguyfromhell said:
Drivers, drivers, drivers.
If your phone is in fastboot mode, make sure drivers are installed. Proper drivers.
Click to expand...
Click to collapse
thanks for the reply someguyfromhell. i've tried every "android adb interface" driver under the sun for the S1 fast boot device that appears in the windows device manager when i put the phone in fastboot. when i try to send any command with fastboot.exe it just hangs at "waiting for device", i've fiddled with this stuff every which way and just cannot get fastboot.exe to see the phone. i've tried switching up the usb ports on this computer, but haven't had the opportunity to try a second computer. you've let me know i'm going in the right direction at least, if i have the same results on a second machine i'll pursue the issue further.
thanks again
wookie

WookieInHeat said:
thanks for the reply someguyfromhell. i've tried every "android adb interface" driver under the sun for the S1 fast boot device that appears in the windows device manager when i put the phone in fastboot. when i try to send any command with fastboot.exe it just hangs at "waiting for device", i've fiddled with this stuff every which way and just cannot get fastboot.exe to see the phone. i've tried switching up the usb ports on this computer, but haven't had the opportunity to try a second computer. you've let me know i'm going in the right direction at least, if i have the same results on a second machine i'll pursue the issue further.
thanks again
wookie
Click to expand...
Click to collapse
You need to unlock bootloader, if you want to install CM ROM. Arc S can only have bootloader unlocked via official method, there you can also download the correct driver which you need.
http://unlockbootloader.sonymobile.com/

Someguyfromhell said:
You need to unlock bootloader, if you want to install CM ROM. Arc S can only have bootloader unlocked via official method, there you can also download the correct driver which you need.
the bootloader is already unlocked, as i said, the phone has CM7 on it currently.
Click to expand...
Click to collapse

[Q] Problems in adb/fastboot

Hey all,
I've been rooting phones for a little bit, so when I got my Nexus 7 a couple weeks ago and found that it was as simple as "fastboot oem unlock", I was thrilled. However, it ended up not being that simple, of course.
At first I couldn't get the device to show up for ADB or fastboot at all, even though Windows recognized the device. I downloaded the zip file of the drivers from Google, no luck. Downloaded a new version of the Android SDK, and used the adb/fastboot from it, and then ADB was able to see the N7 and was able to reboot it into the bootloader. However, once in the bootloader, it stops recognizing that the N7 is connected again. Trying "fastboot oem unlock" just causes the program to display <waiting for device> indefinitely.
So that's where I'm stuck now, I haven't been able to find any concrete details on this that are for the N7 2013 (pretty much everything I've found has either not been helpful or has been related to the original N7). Anyone able to help from here? Thanks!

Do u have USB debugging enabled in developer settings? Try turning your USB computer connection to PTP from MTP if you haven't already in storage settings. Then a pop-up will come on your n7 asking to approve your computer to see it. Tell it yes
>^.^< Sent From Meow HTC One

DowntownJeffBrown said:
Do u have USB debugging enabled in developer settings? Try turning your USB computer connection to PTP from MTP if you haven't already in storage settings. Then a pop-up will come on your n7 asking to approve your computer to see it. Tell it yes
>^.^< Sent From Meow HTC One
Click to expand...
Click to collapse
Thanks for the suggestions. Alas, I tried these things. The problem exists now when I'm in the bootloader, which is where fastboot won't recognize that the device is attached.

tigerxchaos said:
Thanks for the suggestions. Alas, I tried these things. The problem exists now when I'm in the bootloader, which is where fastboot won't recognize that the device is attached.
Click to expand...
Click to collapse
When you have the device connected to your computer when it's at the Bootloader screen, what does Device Manager show on your computer? Does it recognize the tablet but doesn't know what it is? You may need to install the drivers when you have the device in the Bootloader menu. I use the Google USB Driver (which you can download in the SDK Manager), right click on the device in Device Manager, select "Update Driver Software", "Browse my computer for driver software", "Let me pick from a list of device drivers on my computer", then browse the list. It may be listed under Android Device, Google...just look down the list, then select the appropriate driver. I believe from there you can select "Android Bootloader Interface", and that should let fastboot commands work.
You may need to reboot the computer.

Make sure you are using the usb cable that came from asus.

Thanks for the help. I tried the process again on a different computer, and eventually got it to work. I was able to unlock bootloader and flash TWRP 2.6.3.0. However, I was only able to mount System, Cache, and USB-OTG as partitions in TWRP, so I couldn't figure out where to drop the SuperSU binary .zip file. I tried rebooting, and (this may have been a mistake) installed the TWRP SU binaries on the way out. Now the device is stuck in a bootloop. Not sure if it was related to the SU binaries or the fact that I couldn't load any sort of data partition. Any thoughts?
EDIT: Apparently the root instructions don't make it clear that you will lock your data partition if you don't boot the device after unlocking the bootloader. I went straight into TWRP from the bootloader after unlocking it, and got a password request. Hit "Cancel" and it let me into TWRP, but factory reset failed. I had to wipe data, wipe cache, then reboot, then do a factory reset and now I'm back in.

[Unrooting] fastboot does not detect OP3, while adb does

For the past few days I've been trying to pass SafetyNet with root and after I failed, I tried to unroot my phone as passing SafetyNet is more important to me than having root. In the processing of doing so, I messed up some things on my device. I flashed all uninstalllers of SuperSU, Xposed, Magisk and other stuff I flashed through TWRP and deleted all SU files in bin and xbin. It removed root but I still wasn't able to pass safety net. I then messed up somehow and removed my TWRP and now when I try to access recovery it simply boots up my phone. I decided it would be the best to simply reset my phone using fastboot and adb (maybe even lock the bootloader again?). Fastboot however, cannot detect my device while abd can (not in the bootloader menu though). I have searched arround on the internet, have installed tons of drivers, reinstalled the SDK + Android Studio,... but I can't seem to get it work. When my device is booted up, it shows in Device Manager as "ONEPLUS A3003" and when in fastboot mode, it shows as "Android Bootloader Interface". Updating the drivers doesn't help. Would love if someone was able to help me out here!

The problem is the last update windows 10. You need to connect your phone in fastboot mode to your PC. Then go to the Device Manager, find there KEDACOM USB Device, clicked and appears in the ANDROID BOOTLOADER INTERFACE. Click on it right mouse button, put the Update Driver Software, then search for drivers on the computer, then select DRIVERS FROM THE LIST and select FASTBOOT INTERFACE (USB GOOGLE ID).

lubinek79 said:
You need to connect your phone in fastboot mode to your PC. Then go to the Device Manager, find there KEDACOM USB Device, clicked and appears in the ANDROID BOOTLOADER INTERFACE. Click on it right mouse button, put the Update Driver Software, then search for drivers on the computer, then select drivers from the list and select FASTBOOT INTERFACE (USB GOOGLE ID).
Click to expand...
Click to collapse
I'll try that out tomorrow, thanks for your reply!

lubinek79 said:
The problem is the last update windows 10. You need to connect your phone in fastboot mode to your PC. Then go to the Device Manager, find there KEDACOM USB Device, clicked and appears in the ANDROID BOOTLOADER INTERFACE. Click on it right mouse button, put the Update Driver Software, then search for drivers on the computer, then select DRIVERS FROM THE LIST and select FASTBOOT INTERFACE (USB GOOGLE ID).
Click to expand...
Click to collapse
Thanks for help, Worked for me

lubinek79 said:
The problem is the last update windows 10. You need to connect your phone in fastboot mode to your PC. Then go to the Device Manager, find there KEDACOM USB Device, clicked and appears in the ANDROID BOOTLOADER INTERFACE. Click on it right mouse button, put the Update Driver Software, then search for drivers on the computer, then select DRIVERS FROM THE LIST and select FASTBOOT INTERFACE (USB GOOGLE ID).
Click to expand...
Click to collapse
Got it working with your help! Had to completely remove the drivers first and than put my PC into flight mode though, because Windows 10 would keep reinstalling the drivers. Thanks for your help!

G4 no fastboot and recovery mode

Hello,
today I have a problem with my g4. When I first got this phone 2 years ago I instantly unlocked bootloader, installed supersu, xposed etc and I had no problems at all with this.
But couple weeks ago somethings happened to my snapchat so today I tried to unroot to login to my account on sc. Then i checked that I have to uninstall xposed framework too, but to do this from xposed installer app, root is needed. I thought "no problem, I will install root briefly, uninstall xposed, unroot and login to snapchat". Then I met first obstacle. I don't have recovery mode in phone. when I connect g4 by usb to pc and use adb (by typing adb reboot recovery) my phone reboots and shows green dead android with red triangle. I have to remove the battery to get phone back to life. I remembered that i always used fastboot commands to boot into custom recovery instead of installing TWRP, because flashing it never worked. But now when I try to execute any fastboot command, it only shows me "waiting for any device" in cmd. what do I have to do now? all essential drivers are installed on my pc. phone is showed as "LGE Mobile adb interface" in device manager. when I enter "adb reboot fastboot" it only reboots my phone and nothing else. Does anybody know a solution? I wouldn't like to wipe my g4 from all data. I have read many pages on google and nothing helps. I've tried fastboot on 2 different computers, one with usb 3.0 and one with 2.0 and results are the same. If someone could help me, thanks in advance.

dziedziol said:
Hello,
today I have a problem with my g4. When I first got this phone 2 years ago I instantly unlocked bootloader, installed supersu, xposed etc and I had no problems at all with this.
But couple weeks ago somethings happened to my snapchat so today I tried to unroot to login to my account on sc. Then i checked that I have to uninstall xposed framework too, but to do this from xposed installer app, root is needed. I thought "no problem, I will install root briefly, uninstall xposed, unroot and login to snapchat". Then I met first obstacle. I don't have recovery mode in phone. when I connect g4 by usb to pc and use adb (by typing adb reboot recovery) my phone reboots and shows green dead android with red triangle. I have to remove the battery to get phone back to life. I remembered that i always used fastboot commands to boot into custom recovery instead of installing TWRP, because flashing it never worked. But now when I try to execute any fastboot command, it only shows me "waiting for any device" in cmd. what do I have to do now? all essential drivers are installed on my pc. phone is showed as "LGE Mobile adb interface" in device manager. when I enter "adb reboot fastboot" it only reboots my phone and nothing else. Does anybody know a solution? I wouldn't like to wipe my g4 from all data. I have read many pages on google and nothing helps. I've tried fastboot on 2 different computers, one with usb 3.0 and one with 2.0 and results are the same. If someone could help me, thanks in advance.
Click to expand...
Click to collapse
Try another Cable. Even my original LG cable isnt working with fastboot/adb.
have you tried: https://forum.xda-developers.com/g4/general/guide-how-to-enter-fastboot-mode-t3239537
some more Information about Your Phone. usu´d or nornmally unlooked. Stock rom?

uweork said:
Try another Cable. Even my original LG cable isnt working with fastboot/adb.
have you tried: https://forum.xda-developers.com/g4/general/guide-how-to-enter-fastboot-mode-t3239537
some more Information about Your Phone. usu´d or nornmally unlooked. Stock rom?
Click to expand...
Click to collapse
Tried with another cable and nothing changes.
I tried to do this method you sent. So when I enter download mode it goes into "firmware update" after couple of seconds, my phone isn't detected on pc and the first command in console "Send_Command.exe \\.\COMx" returns "FAIL".
My G4 (H815) is stock rom, bootloader unlocked normally, didn't do any usu or anything like this. I have only rooted it with supersu 2 times (one time maybe a 1,5year ago i log out from snapchat and had to unroot and root again), installed xposed framework and did nothing else. I don't know how is it possible that I used fastboot on this phone then and now I can't do it. Half a year ago I've installed custom rom on friend's G2 and installed some programs etc. on my pc (because installing this rom didn't went that well and I had to flash stock .kdz or something like that through LGUP/LG bridge/lg flash tool, I don't remember) and I thought that it did some mess but when I tried to use fastboot on another PC, where I've installed drivers freshly, the result was the same.
So what is about "firmware update"? It is obviously stuck on 0% and I have to remove the battery to leave this mode.

dziedziol said:
Tried with another cable and nothing changes.
I tried to do this method you sent. So when I enter download mode it goes into "firmware update" after couple of seconds, my phone isn't detected on pc and the first command in console "Send_Command.exe \\.\COMx" returns "FAIL".
My G4 (H815) is stock rom, bootloader unlocked normally, didn't do any usu or anything like this. I have only rooted it with supersu 2 times (one time maybe a 1,5year ago i log out from snapchat and had to unroot and root again), installed xposed framework and did nothing else. I don't know how is it possible that I used fastboot on this phone then and now I can't do it. Half a year ago I've installed custom rom on friend's G2 and installed some programs etc. on my pc (because installing this rom didn't went that well and I had to flash stock .kdz or something like that through LGUP/LG bridge/lg flash tool, I don't remember) and I thought that it did some mess but when I tried to use fastboot on another PC, where I've installed drivers freshly, the result was the same.
So what is about "firmware update"? It is obviously stuck on 0% and I have to remove the battery to leave this mode.
Click to expand...
Click to collapse
Try installing "adb universal drivers".
Also in your computer device manager, with the phone connected, uninstall the device, adb device, modem everything related with the phone. Reinstall and try it after install the universal drivers.
Hope it works, good luck!

RuedasLocas said:
Try installing "adb universal drivers".
Also in your computer device manager, with the phone connected, uninstall the device, adb device, modem everything related with the phone. Reinstall and try it after install the universal drivers.
Hope it works, good luck!
Click to expand...
Click to collapse
Uninstalled everything lg-related from device manager, uninstalled everything lg/android-related through revo uninstaller, installed adb universal drivers, lg usb drivers, everything seems fine, when I type "adb devices" in cmd it shows my phone but, again, when I enter something related to fastboot, it only shows <waiting for any device>.
Is it even possible?? I have not seen any cases like mine in internet - somebody's phone every time was else bricked or somebody would try to flash something and errors like that happened, but I have used fastboot many times on G4 and G2, didn't reinstall windows and everything worked! Why I can't access recovery mode (dead android with red triangle) or enter fastboot or do something in download mode? What could happened?! Is it possible to fix this without wiping data from my G4? I haven't done factory reset for very long time and copying tens of thousands of photos and videos, quickmemo notes, music, voice recordings, chrome bookmarks and everything else to my PC would be a big pain for me.
After all, thanks for replies, and I hope that we will find solution for this.

dziedziol said:
Uninstalled everything lg-related from device manager, uninstalled everything lg/android-related through revo uninstaller, installed adb universal drivers, lg usb drivers, everything seems fine, when I type "adb devices" in cmd it shows my phone but, again, when I enter something related to fastboot, it only shows <waiting for any device>.
Is it even possible?? I have not seen any cases like mine in internet - somebody's phone every time was else bricked or somebody would try to flash something and errors like that happened, but I have used fastboot many times on G4 and G2, didn't reinstall windows and everything worked! Why I can't access recovery mode (dead android with red triangle) or enter fastboot or do something in download mode? What could happened?! Is it possible to fix this without wiping data from my G4? I haven't done factory reset for very long time and copying tens of thousands of photos and videos, quickmemo notes, music, voice recordings, chrome bookmarks and everything else to my PC would be a big pain for me.
After all, thanks for replies, and I hope that we will find solution for this.
Click to expand...
Click to collapse
You could Check if FWUL from SteadfasterX is helping You out with your Problem.
https://forum.xda-developers.com/an.../live-iso-adb-fastboot-driver-issues-t3526755
With the Installed Salt You cann Backup your Device.

dziedziol said:
Uninstalled everything lg-related from device manager, uninstalled everything lg/android-related through revo uninstaller, installed adb universal drivers, lg usb drivers, everything seems fine, when I type "adb devices" in cmd it shows my phone but, again, when I enter something related to fastboot, it only shows <waiting for any device>.
Is it even possible?? I have not seen any cases like mine in internet - somebody's phone every time was else bricked or somebody would try to flash something and errors like that happened, but I have used fastboot many times on G4 and G2, didn't reinstall windows and everything worked! Why I can't access recovery mode (dead android with red triangle) or enter fastboot or do something in download mode? What could happened?! Is it possible to fix this without wiping data from my G4? I haven't done factory reset for very long time and copying tens of thousands of photos and videos, quickmemo notes, music, voice recordings, chrome bookmarks and everything else to my PC would be a big pain for me.
After all, thanks for replies, and I hope that we will find solution for this.
Click to expand...
Click to collapse
<waiting for any device> because if windows don't recognizes the device as it should adb will never "see" it.
While on the process, pay attention to the device manager. When you get the message in cmd of <waiting for any device>, uninstall your device and make device manager search for devices.
If still shows you as the same device and adb still waiting, you might have to uninstall the device and install it manually choosing from a list. Now I don't remember how it is suppose to be detected...
During install and uninstall don't disconnect the device from the computer, and remember, use a USB2 port.
I already got that several time. Took me time but that's how I managed to fix it.

okay, guys, it is a shame for me... but I worked out what is wrong with my phone.. maybe not with my phone, but what is wrong with me.
all I needed to do to launch a fastboot was type "adb reboot bootloader" and everything is fine now.
Sorry that you had to give me so much tips and this problem turned to be my stupid mistake, but I'm glad that i won't have to install linux and play with virtual machines to repair my phone
Anyway, thanks for your kindness and will to help, greetings for everyone!
@edit: Turns out that i have one more question. I want to uninstall xposed framework. But there are many versions of uninstaller on their site. Is there any risk that i will "break" my G4 if I use the newest one? I have xposed version 87 and I don't want to do something stupid. thanks in advance.

somebody knows? if I can use the newest version of uninstaller no matter which version of xposed framework im using?