not used it with atf, but this is procedure we tested on infinity best dongle
Method
Connect cable to usb port on pc and phone, power on phone
Phone is detected
Press read flash
Phone reboots into usb rom mode
Drivers installed
Flash read ok
Use UFED physical analyzer to decipher the dumped .bin file
RM-1133 and RM-1134 was not listed as a supported model on EFED, but if you treat it as a nokia 108 it will work
Thanks for the excellent suggestion, but be aware this is the RM-908 model 2013 with no usb connectivity, I have a FBUS Cable with a Nitro box purchased from your good shop, when I read the flash I keep getting a dump file which is unrecognised in the tools used so far.
Don't have access to UFED but I FTK, Autopsy and one or two others keep getting unrecognised file. I was recommended the ATF tool for this type of phone but it is difficult to get hold of the method, as simple as you have written it above which is excellent.
Any other suggestion before I purchase the Infinity Best Dongle??
Thanks