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Galaxy Watch Active 2 44mm SM-R820 Odin Stuck

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Ndre81

Member
Mar 30, 2021
8
4
Saludos a todo el foro. Quiero compartir con ustedes el sistema que utilicé para recuperar un R825 bloqueado. Usé un plexiglás, los resortes de 4 bolígrafos y 4 pines. Publica las fotos aquí y agradece a todo el foro la ayuda recibida.
Antes de querer cambiarle el firmware al reloj me funcionaba normalmente, ya con este firmware nuevo instalado no me reconoce el Bluetooth ni el WiFi que podría ser ??? Ese es el gran problema que no me deja conectarme al celular por medio de Bluetooth ...
Al querer conectarme por medio de los pines del reloj a la PC no me reconoce no se si serán el cable o la conductividad o la combinación de colores ayuda urgente...
 

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Ndre81

Member
Mar 30, 2021
8
4
IMHO same Pinout as GWA2...

Same Question like in other Thread...

Your exact Model Name...

SM-R840 or LTE Variant SM-R845F?

Best Regards
if my watch model is sm-r820 I have tried several methods such as changing the pins for the colors of the cables and also the drivers and none gives me the solution
 

adfree

Senior Member
Jun 14, 2008
9,392
5,559
Samsung Galaxy Watch 4
@Ndre81

Sorry, my fault because I am from Germany and your last post was not in English...


If I look again on your Photos...
Possible reason could be USB cable.

Not every cable work as it seems...

For me I had only used Samsung Original USB cable(s)...

The black cable with Micro USB...

Best Regards
 

Ndre81

Member
Mar 30, 2021
8
4
I am from Ecuador but if I speak English well and the problem with my watch is that it does not recognize the galaxy watch active 2 sm-r820 when I connect to the pc it does not recognize it and I put it in download mode
 

Ndre81

Member
Mar 30, 2021
8
4
If it worked for you using the original Samsung cable or would there be a special model to be able to connect from the pc to the clock in download mode
 

adfree

Senior Member
Jun 14, 2008
9,392
5,559
Samsung Galaxy Watch 4
Check this thread...

I have only own experience with SM-R732 and SM-R760...

But you can see more then 1 user can do this "magic" successfully also with GWA2...
And I have minimum Photos from 1 GW3 user...

My suggestion...

If you are 100000 % sure your wires have stable connection...
wires not tooooo long...
no short circuit somewhere...

My SM-R732 for instance I have soldered wires...


It is up to you... to find the missing "part"...

And be sure not to kill Hardware...


Best Regards
 

Ndre81

Member
Mar 30, 2021
8
4
Check this thread...

I have only own experience with SM-R732 and SM-R760...

But you can see more then 1 user can do this "magic" successfully also with GWA2...
And I have minimum Photos from 1 GW3 user...

My suggestion...

If you are 100000 % sure your wires have stable connection...
wires not tooooo long...
no short circuit somewhere...

My SM-R732 for instance I have soldered wires...


It is up to you... to find the missing "part"...

And be sure not to kill Hardware...


Best Regards
 

Ndre81

Member
Mar 30, 2021
8
4
I would have to look for a compatible cable so that the pc and the clock connected in download mode recognize me
 
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adfree

Senior Member
Jun 14, 2008
9,392
5,559
Samsung Galaxy Watch 4
@leeds2000

About GW3...



I have forgotten if this is SM-R840 or SM-R850...

Can you try to explain where exactly you fail?..

If you have 3 D Printer you could play with something like this...

Best Regards
 
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leeds2000

New member
Apr 13, 2015
4
3
his message I get when I am trying attach pins to the watch


Unknown USB Device (Device Descriptor Request Failed)” My computers is fine (and have also installed Samsung USB codes

Question

Do I need to put watch into any kind mode like download or factory setting etc

2) Which Odin should use.

Thanks in advance
 
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adfree

Senior Member
Jun 14, 2008
9,392
5,559
Samsung Galaxy Watch 4
@leeds2000

A

Sorry I have limited time and motivation...


B

IMHO nearly all hints are allready in this thread...

C

I have NO Crystal Ball...

No idea if you soldered wires...
Or you create solderless connection or you use Wünschelrute... or Telepathie...

Maybe add Photos... maybe we can learn something and we can try to identify solution...

About Odin...

I am lazy...

Hints... look at Photos and Screenshots from other users...


Best Regards

Edit 1.

Odin Version you can see here:

Success with 3.14...

And here visible 3.13:
 

Josebulls12

New member
Oct 24, 2021
1
1
take a look at the settings they made as the same problem happened to me then download a firmware from
fullstockfirmwaredownload . com
solder the cables correctly by reversing the green and white and manage to install it completely without any problem
I leave you the firmware that is for the SM-R820.
Could someone tell me how to remove KNOX from Galaxy Active 2?
 

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QuantumBiker

Member
Oct 22, 2014
5
1
My low-tech solution for SM-R820 is to make pin-holes in 3x5 card stock every 1mm with 1mm offset pattern using a sharp pointy object. Then put 20guage 5mm stripped wires through. Glue those from insulated side (hot melt or just craft glue and wait to dry). Then, slip insulation back on wires so just a tiny bit of wire sticks out - adjust so wires line up. Use blue painters tape to secure to watch.

The contact points are 1mm apart and offset on every other one is also about 1mm I think

O.O.O
..O.O

That fails - that printed jig is good idea, pins act as springs because impossible to get all 4 to contact otherwise. Trying to mod old wire-wrap socket - getting Windows does no recognize - tried swapping green/white - same thing. Does not recognize - guess is a bad connection....

Getting this in device manager:

Device USB\VID_0000&PID_0002\5&156c11fb&0&1 was configured.
Driver Name: usb.inf
Class Guid: {36fc9e60-c465-11cf-8056-444553540000}
Driver Date: 06/21/2006
Driver Version: 10.0.19041.488
Driver Provider: Microsoft
Driver Section: BADDEVICE.Dev.NT
Driver Rank: 0xFF0000
Matching Device Id: USB\DEVICE_DESCRIPTOR_FAILURE
Outranked Drivers: usb.inf:USB\DEVICE_DESCRIPTOR_FAILURE:00FF2000
Device Updated: false
Parent Device: USB\ROOT_HUB30\4&2e4b3329&0&0

What is needed is called Spring-Loaded Contacts, Spring probes, or Pogo Pins:

 
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Mohsen_Bar3lona

New member
Dec 7, 2021
2
2
my english is not good so apologise
i did mistake to my watch from this way :



TechnoProz
but my watch bricked ... download wireless is down ... my phone cant connect to watch ... my watch name changed from watch active 2 (R-820) to watch active 2 (AAAA) in first watch page

WhatsApp Image 2021-12-07 at 23.26.38.jpeg


i connected my watch to pc with usb cable ....
WhatsApp Image 2021-12-07 at 23.27.42.jpeg

WhatsApp Image 2021-12-07 at 23.28.09.jpeg


i flashed my watch sooooooo many times with odin 3 in download mode with usb cable but my watch doesnt answer and show watch active 2 (AAAA) again and again and againnnn ... :-((
i tried with diffrent rom and combination ... buttttttttttt
please help what to do ?
 
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Mohsen_Bar3lona

New member
Dec 7, 2021
2
2
Please Filenames... as I have no Crystal Ball...

No need to write all files you tried...
Better you start with latest you found...

BOTH
Combination Firmware AND Stock Firmware?

Best Regards
thanks dear adfree
i used from your instruction in this threat:
i flashed my watch by :

R820XXU1DUA3_Tizen_3File_CSC (OXA).EF_3225470995
and
COMBINATION-FT55_R820XXU1ATJ1.tar.md5

and now my watch is back !!! i am grateful to ADFREE / he is a gentleman in this base !!!!!!!!!!!!!!!!

I advise everyone to consult with (adfree) before flashing the smartwatch . He is quite professional in this field. I did this without consulting and my watch bricked But with his help (adfree) my watch came back !!!
 
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  • 4
    Greetings to the whole forum. I want to share with you the system I used to recover a bricked R825. I used a plexiglass, the springs of 4 pens and 4 pins. Post the photos here and thank the whole forum for the help received.
    3
    Thank you very much user vrivotti. :cool: :good:

    Photos not from me, but from user:
    vrivotti

    I have only attached the Photos here.

    Thank you.
    Really good idea. :good:

    Best Regards
    3
    Take it to samsung service centre and ACT Dumb!

    Hi, I have a SM-R820 and for mistake I flashed a incorret firmware (SM-R830) and now my watch it's bricked (?), It will allow me tho se the boot menu but all the options take me to the same screen, so I can't use the Download wireless again to reflash another firmware, please help it's brand new or some ideas? :D

    Thank you in advance.

    *I Tried to attach images but the forum wont allow me jet*

    Why not take it back to Samsung service center and play dumb that i don't know what happened an update came and after update, this happened. Now u guys fix it. As it is charging and not broken. Let them figure out what the hell is wrong or replace it. As you can't get it to recovery mode. Providing SM820 Combination firmware and stock won't help here.
    3
    The connection does not work. Look at the pictures.
    39182d73ed9a.jpg


    d648ed141642.jpg


    30aafa97cc87.png


    ---------- Post added at 06:08 PM ---------- Previous post was at 06:03 PM ----------

    @Ura535

    Any progress?
    :confused:

    If connection not work... then maybe switch green and white cable...

    ONLY! if in Device Manager from Windows unknown device plop out...

    Best Regards

    Now I will try to change the white green places.

    ---------- Post added at 06:22 PM ---------- Previous post was at 06:08 PM ----------

    @Ura535

    Any progress?
    :confused:

    If connection not work... then maybe switch green and white cable...

    ONLY! if in Device Manager from Windows unknown device plop out...

    Best Regards

    It works now.
    3
    @davigar

    Soldered wires?

    Or solderless?

    Thanx.

    Photo(s) are welcome. ;)

    Best Regards

    Solderless, I made the same cable that made m0fly92 without disassembling the watch.

    I bent the pins to match the contacts and I filed them to leave them all at the same height, just connect it recognized by odin and flashed it without errors