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My father in law bought a new phone SGS on O2 and I offered to unlock it as I have unlocked my husbands last week (he's was on O2 as well but in 2.1 or 2.2.1 version I think-froyo?)
Before I continue may I say I know you guys out there know so much more than me and I really need your help. I really tried to help unlocking this phone and for hours I searched and read things like reboot, download mode, recovery mode, flashing, JKV and so many other words and letter that I could not understand. Very few I understood in the end but may have messed up badly (?).
Please, I need help and please treat me as if I were your mum or even grandma. Step by step in simple normal English please.
My father in law's version is 2.3.3
I tried unlocking it the way I unlocked my husband's but didn't work. After looking for hours I thought that the best way to do it would be to downgrade from 2.3.3 (gingerbread (?)) to 2.2.1 (froyo (?)) and then unlock it.
I found this:
http://forum.xda-developers.com/showthread.php?t=1089989
and tried to follow it.
I downloaded EZRom and EZboot-Froyo-1.0.tar.md5 from the same post.
I followed:
•Download the right version from section above
•Reboot your phone into Download mode
•Connect your phone to computer
•Run EZOdin
•Select EZboot-Froyo-1.0.tar.md5 or EZboot-GingerBread-1.0.tar.md5as a PDA file in EZOdin
•Check the "Phone Bootloader Update" checkbox
•Click Start
I waited for the phone to turn off and feel the little vibration but didn't. Instead it just froze at the first screen when you turn on the phone. The black background with white letters: Samsung Galaxy...
I waited and waited and as nothing was happening I then I took the battery out. Put it back in and tried turning it on. I wouldn't it would just stop and that same screen, the black and white one.
I reread
•Wait until phone reboots and make it reboot into Recovery
SO then I remembered in the many threads I read about the recovery mode so 3 clicked vol up + button at them bottom and turn on bottom.
It gives me a few options. When I click on reboot all it does is show me the black and white screen again and nothing else. ah!!!
I took the battery off and put it back on many times, I also selected the fatory reset option and tried different buttons but nothing. Please help me.
I'm happy to phone any of you guys to help me and guide me even if it's just to put the phone back to what it was before, turning on normally, etc. I'm feeling really sad and a bit stressed as these days are supposed to be a nice time to spend with my little ones and family.
Anyway, please ask me anything.
Thank you so much in advance. I really hope I didn't do anything wrong and I'm just stuck because I'm ignorant in this matter. Thank you
I was never a fan of EZ-stuff.
That said, think you can easily solve that flashing your phone with odin and a proper rom. At this point i am unclear about what bootloaders you have on your phone since you've tried a downgrade.
Without getting into further details (sorry, at work atm). You can get tutorials easy for all of this around this forum.
I'd get Odin, get a proper stock rom from samfirmware with bootloaders included and flash it fresh from start with that. Doesn't really matter if it's froyo or ginger as long as it includes bootloaders.
You'll be left with a working phone at this point.
From here, if you still want to try to unlock it, i'd flash a kernell that would get me root (like the ChainFire one) since i find this the safest and easiest way of getting root on your phone and do a backup of your EFS partition (preferably saved in your computer or wherever outside your phone). This is very important, if you lose of mess up with this part of your phone it will be a pain.
Now, there are several ways of unlocking this phone, the only one i found to be most reliable (but not the easiest one) is to manually edit the nv_data.bin file (located in your EFS partition in hexadecimal.
There's a tut right here
http://forum.xda-developers.com/showthread.php?t=761045&highlight=unlock
Thank you so much for taking the time to reply although you are working!!! Really appreciate it.
I'll try your suggestion but I don't know how to choose the right stock rom with bootloader from samfirmware. I went to the website and registered but don't really know what to do.
I know you are working so might not be able to help me, may be someone else?
Here's where I am. Update. I found a list of firmware. This is the last one on Samfirmware.com.
Europe Samsung I9000 Firmwares.
I9000XXJVS ##
512.PIT
2.3.5
2011 September 8
CSC = I9000OXAJVS
DOWNLOAD
Things I need: (I think)
-Download a firmware (should I use the lastest one?) or 2.2 or 2.3.3? . Is there one better than the other? or is it my choice? How can I choose the best one for me?
-Odin. I have OdinMultiDownloader v4.03 in my desktop. Is that the best thing to use or should I use Ezodin. I don't know what the difference is.
-(Do I need to download or do anything else?)
Things I should do:
-Put phone in download mode
-Plug it to the laptop
-Open Odin (or Exodin?)
-click PDA. Choose the fie I downloaded-firmware.
(-after this I don't know what else I should do or tick or untick)
Am I in the right track or completely off it?
Thank you again to anyone taking the time to read this.
Download Jvt From sammobile. com, you need Odin on your PC (1.7 or 1.8) plus Samsung drivers. Read there flashing guides carefully, check you have download
Mode, battery charged > 50% etc
There is also a video on youtube which shows you how to upgrade to jvt.
Sent using TCP/IP
Sounds like you've got the boot-loop problem, which means that you most likely "soft-bricked" the phone. Don't worry, this isn't that big of a deal and can be fixed with relative ease. I agree with the posters above, a clean flash with Odin will probably fix your problem and get you out of the boot-loop.
I'll go into a bit more detail with some steps (feel free to correct me if I missed anything)
1. Download Odin 1.85 here.
2. Head over to Samfirmware.com and grab the latest firmware for the phone. I recommend Gingerbread 2.3.5 (JVT).
3. Make sure your computer has the proper drivers installed so it can communicate with your Samsung Galaxy GT-I9000. If you've flashed the phone before with your computer then you probably have the drivers installed, but here's a link for them just in case: Samsung USB Drivers
4. Enter download mode on your phone, depending on your firmware, it could be Vol down + power + home OR Vol up + power + home. Pull the battery out, pop it back in, and hold those three buttons until the phone turns on.
If you can't enter download mode with the 3-button hold method, then you might have to do so via ADB with the command "reboot download".
Getting into download mode is pretty critical, as you cannot progress further without it.
5. Once you're in download mode (should see a triangle with an Android shoveling stuff in it), plug your phone into your computer's USB port and open Odin. In Odin, press "Reset" on the right hand side. Odin should be able to detect your phone (this is indicated by a yellow box on the left side). I'm using a PC, so inside the yellow box I see something like this: 0:[COM9]. On a Mac it probably says something different, but as long as you see the yellow box appear then it's all good.
If you don't see the yellow box, then there's no communication between your phone and the computer, which means that you may have to reinstall the Samsung USB drivers.
6. With the contents in the firmware package that you downloaded from Samfirmware.com extracted, load them onto Odin accordingly.
PIT: use s1_odin_20100512.pit
PDA: JVT (sometimes the PDA is labeled CODE instead)
PHONE: JVT (sometimes labeled as MODEM instead)
CSC: use HOME-MULTI-OXAJVT (should be about 9.5 MB in size)
Since your father-in-law's phone was originally 2.3.3, you shouldn't have to alter the bootloader with Odin, so leave the bootloader field empty.
7. Once you've loaded up all the necessary files, make sure Re-partition and Auto-reboot is checked. Leave the rest of the checkboxes as it.
8. Press Start. This should initialize the flashing of the new firmware. After the phone has been flashed, it should reboot automatically and should hopefully be able to get past the Galaxy S black and white logo (aka. boot loop).
9. The phone should be in working order now. I used this method to unlock my SGS: SIM Unlock on the SGS. With this method, your phone needs to be rooted, so head on over to ChainFire's thread here to install his kernal which is already rooted.
Flashing firmware can be pretty scary since nobody wants to end up with a brick that costed $400 and it seems like so much can go wrong, but hopefully the steps I've provided helped. Good luck!
I bricked my SM-T900 Wifi while attempting to root it. Can anyone help me get it un-bricked?
Here's a step by step list of what I did and what happened:
1. Turned on USB debugging mode
2. Downloaded and installed Samsung kies
3. Downloaded the file for SM-T900 from autoroot [dot] chainfire [dot] eu/ (it won't let me post outside links)
4. Turn off tablet, get into custom firmware installation mode by holding power, volume-, and home, then confirm the warning
5. run Odin (v3.07, came in the zip file)
6. plug in tablet, tablet showed up as a com port but did NOT show any other information. I don't know if it was supposed to show anything else but I hadn't though about that at the time.
7. Clicked on PDA and selected the file CF-Auto-Root-v2wifi-v2wifixx-smt900.tar.md5
8. Clicked start
9. Waited, it said it was doing something with cache, I don't recall exactly what it said
10. after about 3 minutes the screen looked wrong, all the pixels were different colors, (rainbow static?)
11. Waited about 10 minutes just in case that was not a sign of failure, then Odin reported that it failed.
Now when I press the power button, I get the screen that says "Firmware upgrade encountered and issue. Please select recovery mode in Kies and try again"
I tried using that in Kies but Kies can't connect to my tablet any more. When I try to use Odin using the recovery with power, vol-, home, it detects that I plugged it in but when I try to click start it fails and nothing happens.
I have exact the same problem.
I have read many articles, who said it was easy to root.
That's not true !!!!.
Maybe because the tablet became an update today ?
What I did to recover the tablet: (phew !!!)
Download this bootloader:
http://forum.xda-developers.com/attachment.php?attachmentid=2591013&d=1392923580
Connect to Odin and flash it.
A few seconds, it says OK, reboots and voila: there's your tablet again revived !!!!.
rumaro said:
I have exact the same problem.
I have read many articles, who said it was easy to root.
That's not true !!!!.
Maybe because the tablet became an update today ?
What I did to recover the tablet: (phew !!!)
Download this bootloader:
http://forum.xda-developers.com/attachment.php?attachmentid=2591013&d=1392923580
Connect to Odin and flash it.
A few seconds, it says OK, reboots and voila: there's your tablet again revived !!!!.
Click to expand...
Click to collapse
Unfortunately Odin fails before it manages to even connect to my tablet so I'm not sure it will work for me but I'll give it a try. It managed to connect before when I tried to flash the root files but now it fails every time. I'll update this when I get home and try flashing that.
Edit:
Got home, tried your fix. I am happy to report it worked and it only took a few seconds. Thanks!
Edit:
To anyone reading this thread, if you tried rooting your SM-T900 using the SM-T900 files for rooting, try using the SM-P900 files instead! I just tried that and it seems to be working fine.
I'm glad I could help. :good:
It's bad for your heart when you see that your expensive tablet is bricked.
Hello everyone. Where do I flash the bootloader in odin? Do I use PDA or Bootloader and do I need to check the bootloader update box? Just wanted to confirm before further messing up my tablet. Thanks!
Edit: Never mind, figured it out. Thanks for the help!
This method just worked for me. Flashed the bootloader with Odin after getting "stuck" and it booted right up.
Jim
sizedlemming65 said:
Hello everyone. Where do I flash the bootloader in odin? Do I use PDA or Bootloader and do I need to check the bootloader update box? Just wanted to confirm before further messing up my tablet. Thanks!
Edit: Never mind, figured it out. Thanks for the help!
Click to expand...
Click to collapse
What did you do exactly to fix it? I'm having the same issue. Just sits at screen and says:
ODIN MODE
Product Name: SM-T900
Current Binary: Custom
System Status: Official
KNOX Warranty Void: 1
RP SWREV: A1
How do you use that recovery.img file?
For the top most problem flash cwm or TWRP recovery through Odin or through recovery mode then boot into cwm or TWRP recovery delete all files and install a supported rom.
If u want full explained steps mail me
- [email protected]
Sent from my SM-J500F using XDA Forums
it's 2022 & my T900 finally went into bootloop in model logo, does anyone know the real reason for this? is it hardware or software problem?
- I can flash any version via odin but still bootloops
- TWRP worked once after that can't get in anymore
- the only button working is for the download mode PWR + Vol Down
- before all this LED Stayed on until batt drained then bootloops
it's a good tab to watch movie while on a treadmill
I'm a newbie with the rooting and custom rom installation, I've actually never done one before attempting in on my phone a SM-G730A mini S3, I have searched online and was unable to find the factory rom for this device or instructions how to install.
I was able to root my phone using king root, Then I started removing all the factory programs that ill never used. It was great until a few days ago I removed 2 programs that affected my phone operates. It now gets stuck on the at&t screen when powering on, but the funny thing is that if someone calls me, the screen pops up for me to answer.
Issues with my phone: gets stuck on at&t screen, no home screen at all, only way to access apps is through S voice.
I first started looking into the custom rom because I wanted wi-fi calling since the phone signal is low on this phone. I appreciate any help on this. Thanks
rotorholic said:
I'm a newbie with the rooting and custom rom installation, I've actually never done one before attempting in on my phone a SM-G730A mini S3, I have searched online and was unable to find the factory rom for this device or instructions how to install.
I was able to root my phone using king root, Then I started removing all the factory programs that ill never used. It was great until a few days ago I removed 2 programs that affected my phone operates. It now gets stuck on the at&t screen when powering on, but the funny thing is that if someone calls me, the screen pops up for me to answer.
Issues with my phone: gets stuck on at&t screen, no home screen at all, only way to access apps is through S voice.
I first started looking into the custom rom because I wanted wi-fi calling since the phone signal is low on this phone. I appreciate any help on this. Thanks
Click to expand...
Click to collapse
Any guru's in here that can help?
rotorholic said:
Any guru's in here that can help?
Click to expand...
Click to collapse
I think you should reflash your current firmware version via Odin3. You can get stock ROMs from sammobile.com/firmware. You will lose your root access and you will get these system apps back what you deleted before.
I download it to my SD card and then what? excuse my newbie questions
those stock roms from sammobile youll need to flash via odin / heimdall
rotorholic said:
I download it to my SD card and then what? excuse my newbie questions
Click to expand...
Click to collapse
Firmwares from SamMobile are only flashable via Odin3 on your PC/Laptop. Move your downloaded firmware to your PC/Laptop and unzip it. Move the ...HOME.tar.md5 file to your desktop.
1. Now download Odin3 and install the drivers for your phone.
2. Open Odin3 as Admin to avoid errors or "Fail" messages while flash. (If you use Windows XP then open Odin like always) and make sure only "Auto reboot" and "F.reset" are checked.
4. Close all Samsung Kies process in task manager to avoid errors. (ignore this if you don't have Kies installed)
5. Tap on PDA/AP and choose the ...HOME.tar.md5 file (wait until Odin finish check the MD5 check sum)
6. Now on your phone. Turn off your device. Then hold volume down + home button + power button till you see a "Warning!!" screen and continue with volume up.
7. Connect your device to your PC/Laptop via USB.
8. Wait until Odin detect your device. (You will see a blue box) If your PC/Laptop install the drivers again then wait a moment.
9. If everything is OK then you can start flashing. (A flash process take up to 10 Min, so be patient)
10. Now your phone should reboot and you're done.
Don't forget you will lose ROOT access and you will get your system apps back what you deleted before.
DO IT AT YOUR OWN RISK.
For more information visit this thread : http://forum.xda-developers.com/showthread.php?t=2159660
Success!
xXPR0T0TYPEXx said:
Firmwares from SamMobile are only flashable via Odin3 on your PC/Laptop. Move your downloaded firmware to your PC/Laptop and unzip it. Move the ...HOME.tar.md5 file to your desktop.
1. Now download Odin3 and install the drivers for your phone.
2. Open Odin3 as Admin to avoid errors or "Fail" messages while flash. (If you use Windows XP then open Odin like always) and make sure only "Auto reboot" and "F.reset" are checked.
4. Close all Samsung Kies process in task manager to avoid errors. (ignore this if you don't have Kies installed)
5. Tap on PDA/AP and choose the ...HOME.tar.md5 file (wait until Odin finish check the MD5 check sum)
6. Now on your phone. Turn off your device. Then hold volume down + home button + power button till you see a "Warning!!" screen and continue with volume up.
7. Connect your device to your PC/Laptop via USB.
8. Wait until Odin detect your device. (You will see a blue box) If your PC/Laptop install the drivers again then wait a moment.
9. If everything is OK then you can start flashing. (A flash process take up to 10 Min, so be patient)
10. Now your phone should reboot and you're done.
Don't forget you will lose ROOT access and you will get your system apps back what you deleted before.
DO IT AT YOUR OWN RISK.
For more information visit this thread : http://forum.xda-developers.com/showthread.php?t=2159660
Click to expand...
Click to collapse
I was finally able to load the stock rom via Odin3 v3.09, I re-rooted my phone and removed all of the att pre-loaded junk software,
I was stuck for a few days since my pc was not finding the phone so I re-installed the Samsung drivers and it worked!
Now im hoping to find a kitkat rom to install, Thanks for all your help guys:good:
touchwiz
rotorholic said:
I'm a newbie with the rooting and custom rom installation, I've actually never done one before attempting in on my phone a SM-G730A mini S3, I have searched online and was unable to find the factory rom for this device or instructions how to install.
I was able to root my phone using king root, Then I started removing all the factory programs that ill never used. It was great until a few days ago I removed 2 programs that affected my phone operates. It now gets stuck on the at&t screen when powering on, but the funny thing is that if someone calls me, the screen pops up for me to answer.
Issues with my phone: gets stuck on at&t screen, no home screen at all, only way to access apps is through S voice.
I first started looking into the custom rom because I wanted wi-fi calling since the phone signal is low on this phone. I appreciate any help on this. Thanks
Click to expand...
Click to collapse
You probably uninstalled touchwiz. You can try installing a theme from the app store that might work.
Newbie Help
I am getting ready to do a first attempt at rooting on a Samsung S3 mini, G730A. I don't know how to get the Samsung USB driver onto the desktop because I'm not sure where it's actually located. I downloaded the Samsung Driver Zip and it's loaded on my C: drive but didn't find anything is there that seemed specific to that phone. I did locate what appears to be the generic Android device USB driver for this phone through Device Manager and put that on the desktop but not sure that is the one that I'll need when I go root. Any suggestions?
Thanks
I decided to create this thread for the many who have attempted to downgrade their AT&T Samsung Galaxy S5[and failed]. The many videos and threads that claim the 100% success rate for downgrading all models of the S5 are terribly mistaken.
In the link I'm providing four files to help all, from noobs to intermediate to maybe even advanced users.
*I am not a developer just someone who was persistent enough to have scavenged for these files and figure out the order to use
Steps:
1. Download all files and place under one directory. (make a new folder for these files to be placed in, make them easy to find.)
2. Run Samsung_USB_Driver_for_Moblie_Phones_v1_4_6_0
3. Unzip Odin3_v3.10.7
4. In Odin3_v3.10.7 folder run Odin3_v3.10.7.exe
5. In Odin select options tab and double check the default of Auto Reboot and F. Reset Time (These should be the only selected)
6. In Odin click AP and navigate to G900A_OC4_Stock_Partitions.tar and open (wait 10-30 seconds for Odin to respond and load)
7. Boot phone into Odin download mode (Press Volume down + home + power on) [for convenient reboot take back panel off and dis->re connect battery]
8. Plug in phone. Under ID:COM it should be blue this means the drivers are properly installed and cable is a sync data cable.(Not charge only)
9. Press start. Wait for PASS to show. Press reset. Unplug phone.
10. Phone will reboot to Samsung powered by android logo. (You've won the first battle)
11. Reboot into Odin download. (Take out battery, shove back in with button combo)
12. Unzip G900A_5.1.1_Fix
13. Plug phone back in and flash under AP the files in order, resetting phone into download mode each time. (boot, modem, NON, recovery)
On final boot put back panel back on and wait on the at&t symbol for 2-3 minutes.
I hope this thread is easily found and my instructions are clear enough that I help all who have had my same problem I've fretted over the past 2 days.
S5 Fix All SM-G900A - Google Drive
drive.google.com
Credit goes to for:
-Initial fix: http://forum.xda-developers.com/att...w-to-unbrick-flash-to-stocknce-g900a-t3077652 (second link on thread)
-Final and true fix: http://mobile.techforums.space/mobi...sung-galaxy-s5-g900a-on-511-oi5-7fb1114c.html
thank! mod
DOes this work for unrooted too?
I just got an AT&T s5 came with 5.1.1. and out of the blue it started bootlooping. Could not get into recovery but could get into download mode.
Just found this thread was going to try but now seems to boot. Not sure what happened. I did several battery pulls.
In any case good to know if this works in case it happens again.
Any idea why I would boot loop? Did nothing to the phone other than disable some system apps. But did not try to flash anything
Yes
Canadoc said:
DOes this work for unrooted too?
I just got an AT&T s5 came with 5.1.1. and out of the blue it started bootlooping. Could not get into recovery but could get into download mode.
Just found this thread was going to try but now seems to boot. Not sure what happened. I did several battery pulls.
In any case good to know if this works in case it happens again.
Any idea why I would boot loop? Did nothing to the phone other than disable some system apps. But did not try to flash anything
Click to expand...
Click to collapse
Yes, this method can be used on unrooted s5. I can say this with 100% certainty because mine wasn't rooted.
Would this method work for the GS5 active? I have the same issue...
Thank you man this save my phones life
Spent 7 hours trying to fix this, this was giving me such a migraine headache, I am happy to say that my phone is back thank you so very much this is greatly appreciated for this easy to follow step by step instructions
Mirrors for Download
Can mirrors for the download be provided, please? Can not seem to download from the google drive.
Importance of Step 2?
My Phone seems to be working after Step 10. What is the importance of the next steps? Thank You.
After Step 10
meisteryaw said:
My Phone seems to be working after Step 10. What is the importance of the next steps? Thank You.
Click to expand...
Click to collapse
The next steps are if part of the boot process was overwritten by trying to downgrade. This would happen if part of the downgrade flash in Odin was successful.
No
mrredcon2 said:
Would this method work for the GS5 active? I have the same issue...
Click to expand...
Click to collapse
I wouldn't recommend using these (zip/tar) files. However, you can use this process, but you need g870a files. These files are to fix the 900a.
Sure
meisteryaw said:
Can mirrors for the download be provided, please? Can not seem to download from the google drive.
Click to expand...
Click to collapse
Anyone who is able to download is free to make a mirror for these files. I, however, have no idea how.
I don't know why you wouldn't be able to access them. Anyone who clicks the link has access. (You may need to be logged into google.)
Mistake
I screwed up. I thought one of my replies wasn't being posted, didn't see second page.
Now I can't delete this.
I will re-edit this to answer a question.
P.S. sorry for taking so long with answers, I hadn't checked thread in a while.
If urgent you are more than welcome to private message me.
Thank you. This worked for me. I made the mistake of taking the AT&T automatic upgrade to Android 5.1.1 and then trying to downgrade to 4.4.X. and got the Samsung Galaxy S5 splash screen freeze. After too many hours of trying to find a downloadable AT&T Android 5.x version as someone suggested, I came across this post. Thank you again. Once suggestion, I would check sum the downloads so people know what they are getting is legit (I hope these download are . Also the Odin v3.10.7 failed to install on my Windows XP system, but I did have a Odin v3.10.6 that worked fine.
:good:
Hi... can I use this method to upgrade my ATT S5 with android 4.4.4.?
Stuck on startup logo even though i can hear the the startup sound ....
Suggestion
aamszia said:
Stuck on startup logo even though i can hear the the startup sound ....
Click to expand...
Click to collapse
Once you go through this procedure try going into stock recovery, (same button combo only vol up instead of down) then clear cache and/or factory reset. Then redo the second half(5.1.1 stock partition tar flash)
Looks like this should become a sticky for all us AT&T SM-G900A's stuck around 5.1.1.
I will do this process in the next day or so. I assume no PIT file is needed?
I ready to do this. unlocked and rooted all my phones but this one over the years. . .
QUESTION: I purchased this at 5.1.1 C015 upgrade. Does this method helped attaining root (not mentioned anywhere), or just flashing 5.1.1 stock again? I dont need a flash a ROM already working, although still containing bloatware and major battery drain.
Birkyjon said:
Once you go through this procedure try going into stock recovery, (same button combo only vol up instead of down) then clear cache and/or factory reset. Then redo the second half(5.1.1 stock partition tar flash)
Click to expand...
Click to collapse
already done that .. still same problem ...
what should i do next ???
Hello, been a while since I unlocked and installed custom ROMs. Recently I bought a cheap Note 9 and since it is already out of warranty, might as well get a custom ROM to get rid of Bixby.
I used Odin to flash TWRP as per the instructions and now my phone refuses to get out of it. It reboots in to Download mode no matter what button combination I use. Vol down + Power key gets me back in to download mode, if i press all the buttons, same thing. No matter what combo of buttons I use, it just keeps rebooting in to Download mode.
I cannot even turn the phone off... lolwut
The first time it booted in to TWRP, i flashed my ROM and I wanted to reboot to start it but it just keeps coming back to Download mode.
Any ideas?
===========
Ok i somehow fixed it.
When I tried to flash the stock firmware, it gave me Device 4 Binary 3. Googled it and apparently I flashed a BL that's a higher version.
So I fixed it with this genius post from the S6 Edge+ forums by Samuwelle.
---
RE: sw rev check fail device 4 binary 3 error
For all of you who get a similar error while downgrading:
1. download your firmware
2. download 7-Zip
3. download Odin
4. download tar tool
5. READ the guide to the tar tool
6. create the tar.md5 for boot.img, system.img and modem.bin ONE at a time and always cut the created files into a second folder. (I dont know if you need the .back files but just to be shure put them in, too
7. put your phone into download mode
8. start Odin (make shure phone is connected)
9. navigate to the boot.tar.md5 for "BL", the system.tar.md5 for "AP" and modem.tar.md5 for "CP"
10. press "Start" => DONE
This works for me and might not work for you.
I do not take responsibility for any damage YOU did to your phone.
Feel free to ask questions.
Hope this saves someone's day.
Sam
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I downloaded the stock beta android 10 ROM, did the above, flashed it with Odin, did it 4 times because the progress bar did not move at all. Finally, the last attempt I just let it run while I played some games, after about 20mins, it still hasn't moved, gave up, pulled out the cable and immediately got an "Error updating, please use Smart Switch Emergency Recovery". SS did not work, did not detect.
Tried the above method again, no dice. I could not get out of the error mode now, so I just opened Reiboot Android and clicked the little button to exit download mode, and for some reason it started booting! LOLOL
I guess it flashed successfully, just that the progress bar for Odin didn't move. Either way, I ain't touching **** now. On Android 10, One UI 2.0, gonna use this til the official thing comes out.