I have quite a few firmware dumps from before the 13141 dash and I wanted to convert the to post 13141 dump files, I thought I would share it maybe someone else will find it helpful. All you need is jungle flasher and the newest LT firmware pack
first start up jungleflasher and hit load source firmware

After loading source FW you are asked if you want to auto load LT select no

Now open the corresponding post 13141 firmware file

Since I am working with BenQ 64930C firmware I load BenQ 04421C firmware into the target and hit spoof

Now that the Key matches simply hit save to file

JF will tell you that the file has been saved in the log

Now you can load up your new stock file and when JF auto loads LT it will auto load LT2.0 instead of 1.1