Hi there guys, first of all thank you all so much for the support here.
I have a problem with my atrix, i googled a lot before posting, but i still can't find a solution:
I have a atrix 4G, unlocked, was running successfully neutrino 2,8 version.
After 2 months of being (almost) fully functional, the phone crashed(i didn't do anything particular at that time, i think that i was browsing google maps) suddenly and now i have continuous boot loop, i get only the classic red dual core logo, with the "unlocked" notification over it, and then after 10-15 sec it reboots.
I try to open it with holding volume down, to enter recovery, nothing happens. It reboots again. The computer doesn't see it, in this case.
I reboot it with holding volume up, says "starting RSD protocol suppport", and pc sees it and i get the cling-clong sound of usb.
I would do the recovery using rsd, but i read that it is not for unlocked devices, is this so? What can i do in this case? Thanks a lot!!!
ergotelis said:
Hi there guys, first of all thank you all so much for the support here.
I have a problem with my atrix, i googled a lot before posting, but i still can't find a solution:
I have a atrix 4G, unlocked, was running successfully neutrino 2,8 version.
After 2 months of being (almost) fully functional, the phone crashed(i didn't do anything particular at that time, i think that i was browsing google maps) suddenly and now i have continuous boot loop, i get only the classic red dual core logo, with the "unlocked" notification over it, and then after 10-15 sec it reboots.
I try to open it with holding volume down, to enter recovery, nothing happens. It reboots again. The computer doesn't see it, in this case.
I reboot it with holding volume up, says "starting RSD protocol suppport", and pc sees it and i get the cling-clong sound of usb.
I would do the recovery using rsd, but i read that it is not for unlocked devices, is this so? What can i do in this case? Thanks a lot!!!
Click to expand...
Click to collapse
You'll probably need to flash a new recovery partition. Check out this thread:
http://forum.xda-developers.com/showthread.php?t=1950307
RaiderDuck said:
You'll probably need to flash a new recovery partition. Check out this thread:
http://forum.xda-developers.com/showthread.php?t=1950307
Click to expand...
Click to collapse
Thanks, but the problem is that this guy can get into the recovery with powering up+holding volume down button, if i understood well.but I can't!
ergotelis said:
Thanks, but the problem is that this guy can get into the recovery with powering up+holding volume down button, if i understood well.but I can't!
Click to expand...
Click to collapse
flasing a recovery is done via fastboot so you don't have to enter recovery but fastboot (hold power and volume down till it shows fastboot, then press up) .
look at this post: http://forum.xda-developers.com/showpost.php?p=33137046&postcount=10
Fix
ergotelis said:
Hi there guys, first of all thank you all so much for the support here.
I have a problem with my atrix, i googled a lot before posting, but i still can't find a solution:
I have a atrix 4G, unlocked, was running successfully neutrino 2,8 version.
After 2 months of being (almost) fully functional, the phone crashed(i didn't do anything particular at that time, i think that i was browsing google maps) suddenly and now i have continuous boot loop, i get only the classic red dual core logo, with the "unlocked" notification over it, and then after 10-15 sec it reboots.
I try to open it with holding volume down, to enter recovery, nothing happens. It reboots again. The computer doesn't see it, in this case.
I reboot it with holding volume up, says "starting RSD protocol suppport", and pc sees it and i get the cling-clong sound of usb.
I would do the recovery using rsd, but i read that it is not for unlocked devices, is this so? What can i do in this case? Thanks a lot!!!
Click to expand...
Click to collapse
hello i had this problem yesterday, it happens in neutrino rom to alot of people!
and btw i could not open recovery either
ill explain what i had to do
i had to use moto-fastboot and install a new recovery, basically your recovery is dead and your rom is unbootable
heres the steps
download the moto drivers and install
http://forum.xda-developers.com/attachment.php?attachmentid=1381183&d=1349549067
then download the motofastboot zip http://forum.xda-developers.com/attachment.php?attachmentid=1381414&d=1349555102
and create a new folder in C: (computer) called Android and then drag the files from the moto zip into android
Then download a new recovery http://www.mediafire.com/?6ww8wrjrdqq9m97
place the recovery.img into the android folder
now you have all the files needed to reflash your new recovery and fix your phone the whole idea is to reinstall recovery so you can access it and wipe and install the rom fresh again
now you need to do these steps
1) Attach your phone to the PC via USB (use a port closest to the power supply)
2) Reboot phone while holding volume down until you see "fastboot"
3) Press volume up to initiate fastboot
4) On your PC click the Start menu, then in the search box type "cmd"
5) In the command prompt type the following commands (no quotes, hit enter after each command)
6a) "cd c:/android"
6b) "moto-fastboot devices"
your CMD promt should show something like this
C:\Users\Me>cd c:/android
c:\Android>fastboot devices
TA20703SX9 fastboot
c:\Android>
now if that has all worked type the following phrases
moto-fastboot erase recovery
moto-fastboot flash recovery recovery-clockwork-6.0.1.4-maguro.img
moto-fastboot reboot
now the phone should reboot, unplug the usb and pull battery out.
put battery back in and then try to boot into recovery like you normally would (power button + Vol Down)
and your new recovery should load!
from here you can wipe your whole system which i would reccomended as your current one is corrupt and install a new rom or reflash your current on onto a clean wipe. if you dont understand how to clean wipe do all of these steps, factory reset, clear cache, clean dalvik cache then go to mounts > storage and format data + format cache + format system
now install new rom and let it boot up, should bootloop a couple of times then start! if not unplug battery from phone and ask for further assitance
Pixelguy said:
1) Attach your phone to the PC via USB (use a port closest to the power supply)
2) Reboot phone while holding volume down until you see "fastboot"
3) Press volume up to initiate fastboot
Click to expand...
Click to collapse
Thank you for your help, the problem is exactly here, i put on the usb, i power up the phone by pressing the volume down, and the phone does nothing,doesn't show the fastboot,and after 10-15 secs starts rebooting again. This is my problem!
The only response from my phone is when powering up, and pressing the volume up, it says "starting rsd protocol support"
Is there any case that my volume down is dead?
ergotelis said:
Thank you for your help, the problem is exactly here, i put on the usb, i power up the phone by pressing the volume down, and the phone does nothing,doesn't show the fastboot,and after 10-15 secs starts rebooting again. This is my problem!
The only response from my phone is when powering up, and pressing the volume up, it says "starting rsd protocol support"
Is there any case that my volume down is dead?
Click to expand...
Click to collapse
unplug usb
remove battery, then put battery back in make sure phone off (no green light)
then hold power button and vol down at the same time for a few seconds
Fastboot should appear in white writing then press up volume and it should say starting rsd protocal or something similiar
then plug in usb and follow the steps i have written above
i do exactly what you said, but doesn't show fastboot. from switched off, if i press volume up with power button, i see the message "starting rsd protocol support" .but no fastboot option!
Is there any chance that you can access adb after bootscreen? than you can use "adb reboot recovery" to get there...
jorno88 said:
Is there any chance that you can access adb after bootscreen? than you can use "adb reboot recovery" to get there...
Click to expand...
Click to collapse
When i start up phone, the only combination possible to stop restarting is by pressing power+vol up to show that with RSD. There is no other option then selectable. Power + volume down does not work, doesn't show anything, has anyone of you experienced this thing?
If the only working option you have is RSD, then I'm afraid you're stuck with having to flash a stock SBF. I hope you know/remember exactly what stock version you had installed before any modding or flashing, because the SBF has to match exactly. Choose wisely and read up as much as you can before flashing.
I have over a year now with custom roms, and i can't remember which version i had. Why do i have to find exactly the version that i had? The latest stock version won't work with rsd? It will make it hard brick?If i manage at least to recover the fastboot menus etc it would be great!
I will later also try to open it, to see if the side button "volume down" is not working,.
I have another question, in your moto atrix, if you press on startup power+vol up, are you also seeing the "starting RSD" etc option??
ergotelis said:
I have over a year now with custom roms, and i can't remember which version i had. Why do i have to find exactly the version that i had? The latest stock version won't work with rsd? It will make it hard brick?If i manage at least to recover the fastboot menus etc it would be great!
Click to expand...
Click to collapse
Yes, flashing a wrong SBF will most likely hardbrick your device.
ergotelis said:
I have another question, in your moto atrix, if you press on startup power+vol up, are you also seeing the "starting RSD" etc option??
Click to expand...
Click to collapse
Can't try right now, but as far as I know, yes, that is a standard way to enter RSD mode.
thank you, so, i know that at least my phone responds to some instructions.
Is there anyone else to suggest me to do anything else?
IN rsd mode, (other than flashing a stock random rom with chance of hardbricking,)the phone can be read by usb, can i do anything there?
ergotelis said:
IN rsd mode, (other than flashing a stock random rom with chance of hardbricking,)the phone can be read by usb, can i do anything there?
Click to expand...
Click to collapse
Sadly no. The RSD mode can only ever be used to flash SBFs. That's it. Nothing less, nothing more.
I will now try to open it to see if vol down is not working well. If it does work, i will select a stock rom 1 year old and i will flash it using rsd, and whatever happens....:good:
I disassembled the phone, the button seems to operate fine(?).
I flashed with RSDlite the 2.3.6 version, the RSD stuck to waiting for phone to restart.
The phone restarted, the "unlocked" logo disappeared.
Starts normally, passes the red motorola logo, shows the graphic of AT&T, and after ~10sec starts restarting again. Bootloop again!
At boot, pressing power+vol up, i can still get the RSD support. Pressing power+vol down does nothing, I don't see any error messages, like the ones in hard brick.
What can i do now, any ideas please!!!
try this
ergotelis said:
I disassembled the phone, the button seems to operate fine(?).
I flashed with RSDlite the 2.3.6 version, the RSD stuck to waiting for phone to restart.
The phone restarted, the "unlocked" logo disappeared.
Starts normally, passes the red motorola logo, shows the graphic of AT&T, and after ~10sec starts restarting again. Bootloop again!
At boot, pressing power+vol up, i can still get the RSD support. Pressing power+vol down does nothing, I don't see any error messages, like the ones in hard brick.
What can i do now, any ideas please!!!
Click to expand...
Click to collapse
Yesterday I had a hard time getting my phone into fastboot mode, after loading a bad SV kernel,it only wanted to start the RSD protocol mode. I eventually got into fastboot by plugging into the wall charger, then removing and installing the battery while holding the vol button. When fastboot appears, unplug the charger to allow sd access.
Thanks for the suggestion, i tried even this,it didn't work. The funny thing is that it shows the battery charging level full screen if i connect the charger, as it starts.
I noticed also that when i press vol down now, it takes longer to start and continue to the moving red logo, it stays for a while stable red,feels like it is thinking whether to start or not lol (if i don't press vol down, on the power up the red moto logo immediately starts the classic "waving" effects)
Anyone having any kind of suggestion?I guess you don't, right?
Hi guys,
I tried to unlock the bootloader of my Nexus 10 before rooting it. Unfortunately, it didn't work and I can't use it anymore (I either have the "Loading X" forever or a dead droid while trying to go to the recovery mode).
I'm used to do that kind of modifications (only on Samsung Galaxy S and S3 though) and I don't know what I did wrong (but I usually flashed with Odin).
Anyway, I used this tool (after enabling the usb debug and allowing unknown sources) : http://forum.xda-developers.com/showthread.php?t=2001868
I installed the drivers on my PC (menu 1 in the tool), then I could see my device in ADB MODE (in the tool menu). I tried to unlock the bootloader (3rd option in the menu) and it was written completed. My device reboots and nothing happens. I can access the fastboot mode (is it the download mode ?).
I have Odin.
Can someone help me to get a working device ?
Thank you very much.
hiveNzin0 said:
Hi guys,
I tried to unlock the bootloader of my Nexus 10 before rooting it. Unfortunately, it didn't work and I can't use it anymore (I either have the "Loading X" forever or a dead droid while trying to go to the recovery mode).
I'm used to do that kind of modifications (only on Samsung Galaxy S and S3 though) and I don't know what I did wrong (but I usually flashed with Odin).
Anyway, I used this tool (after enabling the usb debug and allowing unknown sources) : http://forum.xda-developers.com/showthread.php?t=2001868
I installed the drivers on my PC (menu 1 in the tool), then I could see my device in ADB MODE (in the tool menu). I tried to unlock the bootloader (3rd option in the menu) and it was written completed. My device reboots and nothing happens. I can access the fastboot mode (is it the download mode ?).
I have Odin.
Can someone help me to get a working device ?
Thank you very much.
Click to expand...
Click to collapse
Easy fix. Get to the dead droid recovery menu and then press all 3 buttons on the top. You will get into the blue recovery options. Choose factory reset.
Sometimes unlocking the bootloaders scrambles a few things on this device and it goes into boot loop. After the factory reset, you'll be fine. PM me if you still have issues.
Sent from my Galaxy Nexus using Tapatalk 2
Blueback22 said:
Easy fix. Get to the dead droid recovery menu and then press all 3 buttons on the top. You will get into the blue recovery options. Choose factory reset.
Sometimes unlocking the bootloaders scrambles a few things on this device and it goes into boot loop. After the factory reset, you'll be fine. PM me if you still have issues.
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
Okay, thank you very much. I didn't know I had to press the 3 top buttons again after the dead droid screen, I thought it failed loading the Recovery Mode.
I have to setup my account etc again so I guess it is safe to say it worked.
Additionally, I tried this method after the recovery : http://forum.xda-developers.com/showthread.php?t=2015467
and it worked fine. My device has an unlocked bootloader and is rooted.
hey if someone could help me im stuck myself, after i had the dead android in recovery mode i tried to flash software with the toolkit in fastboot and now when i go to recovery its just a blank screen till i hold the bottom combo again and it takes me back to fastboot
Blueback22 said:
Easy fix. Get to the dead droid recovery menu and then press all 3 buttons on the top. You will get into the blue recovery options. Choose factory reset.
Sometimes unlocking the bootloaders scrambles a few things on this device and it goes into boot loop. After the factory reset, you'll be fine. PM me if you still have issues.
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
Hey,
I'm having the same problem. I get to the dead droid instead of recovery and tried hitting all three buttons again but it's just looping again.
Any ideas?
maximepull said:
Hey,
I'm having the same problem. I get to the dead droid instead of recovery and tried hitting all three buttons again but it's just looping again.
Any ideas?
Click to expand...
Click to collapse
It sounds like you didn't actually perform a factory reset. The key combination to get into stock recovery from the dead android screen is Power + Vol-Up. That will bring up the option to factory reset.
So if your powered off or bootlooping, hold the Power + Vol-Up + Vol-Down until you're back in the Bootloader. Use Vol buttons to select Recovery Mode and tap Power. When the droid w/ the Red "!" appears, hold the Power button and quick press the Vol-Up button. This should take you into stock recovery. Select Factory reset. Reboot. After a few minutes, the device should boot normally.
Good luck.
sharksfan7 said:
It sounds like you didn't actually perform a factory reset. The key combination to get into stock recovery from the dead android screen is Power + Vol-Up. That will bring up the option to factory reset.
So if your powered off or bootlooping, hold the Power + Vol-Up + Vol-Down until you're back in the Bootloader. Use Vol buttons to select Recovery Mode and tap Power. When the droid w/ the Red "!" appears, hold the Power button and quick press the Vol-Up button. This should take you into stock recovery. Select Factory reset. Reboot. After a few minutes, the device should boot normally.
Good luck.
Click to expand...
Click to collapse
Ok found a video showing that when you get to that part where there's the dead droid (the red !), you don't press hold hold all three buttons but tap them until the recovery screen shows up.
So finally did that but I still have the same problem.
My initial problem was, I received my N10, open the box, turned it on and it started freezing and rebooting. Can't get past the wifi step.
Tried hard and many times to finally get to enter my gmail account, etc
Updated to 4.3, problem persisted so I figured, maybe the factory flashed a bad rom?
So I unlocked it, rooted it and tried flashing older stock versions, same problem.
Tried flashing CM, same; PA, same...
Tried deactivating location service as suggested elsewhere: same; uninstall chrome: same
Even CM withouf GAPPS wouldnt work
So basically, I have a $500 brick. Completely useless as it freezes every 30 seconds.
Decided not to return the device because although I am Canadian, I live in SE Asia and had a visiting friend bring it to me. Way past the return period and the overall experience would be a real pain in the butt... Don't know what to do. Really hoping Kit Kat will solve it but I have doubts.
What do you think?
Sorry. I don't know enough about these things to give more in depth troubleshooting advice. I just recently got my N10 & unlocked it and based on your original post, I thought that's where you needed help. But it sounds like you got past that and got it unlocked.
Have you tried downloading a factory image directly from Google and installing that? If it's locking up on a fresh install of any ROM, it very well may be a hardware issue. You may have to file a warranty claim if possible.
maximepull said:
Ok found a video showing that when you get to that part where there's the dead droid (the red !), you don't press hold hold all three buttons but tap them until the recovery screen shows up.
So finally did that but I still have the same problem.
My initial problem was, I received my N10, open the box, turned it on and it started freezing and rebooting. Can't get past the wifi step.
Tried hard and many times to finally get to enter my gmail account, etc
Updated to 4.3, problem persisted so I figured, maybe the factory flashed a bad rom?
So I unlocked it, rooted it and tried flashing older stock versions, same problem.
Tried flashing CM, same; PA, same...
Tried deactivating location service as suggested elsewhere: same; uninstall chrome: same
Even CM withouf GAPPS wouldnt work
So basically, I have a $500 brick. Completely useless as it freezes every 30 seconds.
Decided not to return the device because although I am Canadian, I live in SE Asia and had a visiting friend bring it to me. Way past the return period and the overall experience would be a real pain in the butt... Don't know what to do. Really hoping Kit Kat will solve it but I have doubts.
What do you think?
Click to expand...
Click to collapse
sharksfan7 said:
Have you tried downloading a factory image directly from Google and installing that?
Click to expand...
Click to collapse
^ that's your solution. If you dont know how to just pm me
Sent from my Galaxy Nexus using XDA Premium HD app
Hopefully someone can help me, my child has a Pendo Pad 7 Model no.PNDPP44QC7 with Kitkat 4.4 and it ended up with lots of malware/viruses and barely usable. This tablet only has a power button and no other buttons so I did not know how to boot into recovery mode to do factory reset and after trying reset through settings which made no difference so I gave the device ROOT access so I could try and delete the malware etc but of course i did not do any sort of backup and did not add CWM or TWRP recovery. I ended up deleting something wrong and now the device just hangs on the Pendo logo screen. I have since worked out how to boot into Recovery Mode and also Fastboot mode now but a bit too late I tried to do a wipe data/factory reset and this made no difference still hangs on Pendo logo.
I can't seem to find a CWM or TWRP image file to suit the tablet and possibly try putting tablet into fastboot mode and using ADB on computer and flash the recovery to tablet. ???
in recovery mode options i get are
apply update from ADB
apply update from sdcard
apply update from cache
wipe data/factory reset
wipe cache partition
backup user data
restore user data
but i can not seem to find any correct files to work with this tablet any help to get this tablet working again would be much appreciated Thanks
Good day! how did you manage to boot into Recovery Mode or Fast Mode?
After pressing the power button and seeing the display turn on. Keep spamming the power button and a menu will pop-up on screen with boot options. Short press of the power button cycles through the options, long press selects the option.
Mine was also stuck on a boot loop, even though I had not played around with any settings or tried to root etc. I was able to revive it by going into recovery mode and doing a factory reset.
Hey OP I've got hold of the same tablet I'm working on getting a rom dump atm. Bare with me I'll try and send a link for the img. If u can get into recovery mode where u can update zip. That's good if not try and via pc. Once u have a link to the tablets boatloader, rest is history.
Hi,
Wondering if I can follow up on this.
Mine is stuck on the PENDO boot screen, and I have tried the reset button, as well as the se commands PENDO suggested....
1. Press On/Off Switch (Power), wait for the Pendo Logo start up screen, and then press On/Off Switch (Power) twice right away.
2. Factory mode menu comes out after 10 seconds, two fingers touches panel together to move to select the one like the following picture shows (no need to understand the Chinese words, just follow through as what the picture shows)
3. Press On/Off Switch (Power) and the following picture below will show, press On/Off Switch (Power) again to proceed on Recovery Mode, and wait for system to restart.
Unfortunately, nothing still happens.
ADB will not reveal what device it is, nor will Win 10 recognise the device for it to show in Device Manager or connected devices.
Windows responds with a ding ding, but nothing shows up.
I am stuck, and any info gladly accepted.
Thanks
bump please
ozviewer said:
Hi,
Wondering if I can follow up on this.
Mine is stuck on the PENDO boot screen, and I have tried the reset button, as well as the se commands PENDO suggested....
1. Press On/Off Switch (Power), wait for the Pendo Logo start up screen, and then press On/Off Switch (Power) twice right away.
2. Factory mode menu comes out after 10 seconds, two fingers touches panel together to move to select the one like the following picture shows (no need to understand the Chinese words, just follow through as what the picture shows)
3. Press On/Off Switch (Power) and the following picture below will show, press On/Off Switch (Power) again to proceed on Recovery Mode, and wait for system to restart.
Unfortunately, nothing still happens.
ADB will not reveal what device it is, nor will Win 10 recognise the device for it to show in Device Manager or connected devices.
Windows responds with a ding ding, but nothing shows up.
I am stuck, and any info gladly accepted.
Thanks
Click to expand...
Click to collapse
not working in my pendotab window 8
Hi,
I could get no further with mine, the same as you.
I contacted Pendo Support, and explained it would work but not boot, I even asked for the image file so I could reload it in recovery mode, however, they did not have access to it, the Chinese manufacturer had not made it available to them.
As I described it was not damaged, but simply not working, they agreed to send me a replacement, even though it was out of warranty, as really, as I said to them, it was not fit for purpose.
I had to send the old one back, but they sent me a satchel in which to do so, at no cost to me.
They sent me the new one very promptly.
Hope is not lost,
Someone has finally manage to extract the factory ROM for the pendo PNDPP44QC7. Just search the model number on needrom.
phoenixemer.blogspot.com.au/2017/04/pendo-pad7-pndpp44qc7.html
password : emerlitspendotab7
TWRP custom recovery
drive.google.com/open?id=0B3k_2dFOmDBGRmljV3JuSUZiUkU
I tried to upgrade a similar device to 5.x, some changes, but some options now not working I have a clone Q88H device, A33 quadcore processor 7" clone. Kernel 3.4.39, firm ware 2.1 Need to go back to 4.4.2 w latest update. Hopefully Play store will work again, as I need it. That, or change to windows version. advice pls?
drusid said:
Hope is not lost,
Someone has finally manage to extract the factory ROM for the pendo PNDPP44QC7. Just search the model number on needrom.
phoenixemer.blogspot.com.au/2017/04/pendo-pad7-pndpp44qc7.html
password : emerlitspendotab7
TWRP custom recovery
drive.google.com/open?id=0B3k_2dFOmDBGRmljV3JuSUZiUkU
Click to expand...
Click to collapse
Please i dont have a needrom account i cant download plz who Can send me the direct link to m'y account
Hi everyone,
Looking for some help on my phone which is the only one I have unfortunately
So basically the Honor 9 is showing only the logo then just a black screen. One time it vibrated afterwards when pressing the volume buttons and made the camera sound. So it seems it might have booted but nothing is showing?
Phone did fall before, but worked afterwards.
I cannot access Emui recovery (when pressing volume up+power, it just shows the logo and black screen), but I can access fastboot.
If I plug it to charge, it shows the charging logo fine.
Bootloader is not unlocked. Nothing custom has been installed.
I already tried Hisuite recovery mode, but it said the device is not supported.
Any advice on what I could try? I searched the forums but couldn't figure out what to do. Any suggestion would be much appreciated.
Thank you!
bleepop said:
Hi everyone,
Looking for some help on my phone which is the only one I have unfortunately
So basically the Honor 9 is showing only the logo then just a black screen. One time it vibrated afterwards when pressing the volume buttons and made the camera sound. So it seems it might have booted but nothing is showing?
Phone did fall before, but worked afterwards.
I cannot access Emui recovery (when pressing volume up+power, it just shows the logo and black screen), but I can access fastboot.
If I plug it to charge, it shows the charging logo fine.
Bootloader is not unlocked. Nothing custom has been installed.
I already tried Hisuite recovery mode, but it said the device is not supported.
Any advice on what I could try? I searched the forums but couldn't figure out what to do. Any suggestion would be much appreciated.
Thank you!
Click to expand...
Click to collapse
Hello.
I know it is close to a year now, but just in case there is someone else out there looking to solve something like this. Just make sure to have a wifi connection through which you can download your firmware and recovery through the eRecovery panel. The downloads should be around a total of 4GB, so bear that in mind.
When you are set with your wifi access do the following (feedback will be appreciated):
- plug your phone to your computer and hold down the vol up + power button to boot into eRecovery
- in the eRecovery panel, choose to download firmware and recovery and it will launch a wifi connection
- connect to your wifi
- download the firmware and recovery accordingly
- once completed, you can proceed to update/upgrade (basically to install) it via the eRecovery
- once the upgrade/update/installations are complete, you can reboot.
- just know that everything on your device will be lost - full system and sdcard wipe will be made.
I hope you find the above helpful for you.