I am not sure to know why but the problem is solved…
I document what i can below, just in case it could be useful for Someone else:
---------------- Season 1: Episodes… many! -----------
For the first trials, i used the USB cable provided with the device (not sure it was an Official Samsung cable because i bough a refurbished phone).
When the phone was connected to PC with this cable (let’s name it “the white cable” because… it is white), the device was well reconnized by PC, File transfert via Windows where OK.
White USB cable is USB-C on phone side and “regular” USB on PC side.
Important fact: on the download screen, i had FAP lock=OFF; OEM lock= OFF; but KG State=Prenormal !
When trying the alternative deployment process described here howto-install-e-on-a-samsung-smartphone-with-windows-easily, i had a well known error message on the download screen: “Only official releases…”.
Odin 3.13 was displaying this:
ID:0/004 Added!!
ID:0/004 Odin engine v(ID:3.1303)…
ID:0/004 File analysis…
ID:0/004 Total Binary size: 40 M
ID:0/004 SetupConnection…
ID:0/004 Initialzation…
ID:0/004 Get PIT for mapping…
ID:0/004 Firmware update start…
ID:0/004 NAND Write Start!!
ID:0/004 SingleDownload.
ID:0/004 recovery.img
ID:0/004 RQT_CLOSE !!
ID:0/004
ID:0/004 Complete(Write) operation failed.
OSM All threads completed. (succeed 0 / failed 1)
After many (many) reading and trials, i stopped.
-------------- Season 2: 1 episode ---------------
Since my first trials (failed), i let the phone go back on a restaured Android and used it few times, in Wifi mode only (No SIM inserted).
and i decided to retry tonigh…
I first check the download screen (without any cable connected): oh! Surprise! The phone was not anymore on “prenormal” mode!! I have no clue why!
Then, i rebooted to come back on the normal android.
Then: connected another cable (let’s name it the “Black Cable” because… guess what!? yes! this one is black).
This black cable is USB-C on BOTH sides and then connected in USB-C on PC side also (<=> not the same port as white cable).
I restarted the easy installer and followed once again the procedure… and it worked!!
Conclusion:
Difficult to say if the root cause was the cable or the “prenormal” status (i saw many articles about recovery upload bloked on a “prenormal” phone).
Or, has the cable an impact on the “prenormal” status?
If no, how and why the KG State has changed from “prenormal” to “checking”?
Just for the “fun” (more a scientific/investigation concern), i’ll try tomorrow to check the Download screen with the white cable connected…
Thanks to the community to intemp to help me.
If anyone is able to guess the real root cause, i’m curious to learn it.
I know this “documentation” does not bring a solution for next people but i hope that, at least, it can help determining the problems.
Wish you all the best.
Good night!