so, this is the first time i try to flash a w550i, hope everything will be ok. i guess your w550 is CID 49 then it should work similar to the w810 flashing. HERE is the FS and Custom files. you also need FAR Manager, download it from HERE
First unrar everything and read THIStutorial
Ill' try to guide you too.
Remove SIM.
Run Phone XS, press START and and connect W550i to your pc using included cable DCU-60. Phone must be closed and "C" button pressed untill the software detects the phone and shows on screen informations about it.. (If phone not detected, instal SEUS the official updater and things shoud go fine)
Go to flash, check MAIN and select file: w550_r2e_dcu.49r.ssw and press flash
When writing procedure ends, close the software aplication, disconect the phone from computer and remove battery for ~5 seconds.
Open again Phone XS, go to flash, check FS and select your FS (W550_R4CB020_FS_EU4.bin) then press "Flash"
Again, when writing procedure ends, close the software aplication, disconect the phone from computer and remove battery for ~5 seconds.
Run FAR Manager and press Alt+F1 and select SEFP
Conection type select: DCU-60 (USB), Speed 921600, At script chose: w550_w600_cid49 and press "enter the matrix".
You now have 60 seconds (with your phone closed to hold "C" key pressed and conect the phone to pc (same procedure as for PhoneXS)
After it passed loaders (~10 seconds), select FS (do not select flash or it will stop) and WAIT for sub-folder to appear on screen. When this happens, proced to customization:
in the custom files folder (tpa/preset/custom) are those files. go to the same folder in the phone (when connected with FAR, tpa.preset/custom) on the left
side of FAR and copy the files
Go to "..." to come back to main folders untill a window shows and ask you if you want to close the loaders. Select YES (selecting NO will result in no savings and work shoud be repeated from the begining).
Close Far Manager, disconect the phone from computer and remove batery for ~5 seconds.
Start Phone XS again, go to flash, check MAIN and select file W550_R4CB020_MAIN_EU_EMEA.bin and press "Flash".
After the procedure finish close the aplication, disconnect phone from cable, remove batery for about 5 seconds.
Insert SIM in phone, start the phone and wait for about 2-3 minutes for the phone to auto configure (it should write please wait on screen)
I really hope it will work, please reply when finished. if you don't succeed, hopefully you will, go to a service center. DON'T experiment other things (with GDFS, EROM ...) cuz you could kill the phone.




