LG U400 Service Manual page 183

5. Download
B. Select Loader File for Product.
You can use browse button to select Loader File.
You must select only CXC1329129_R3D_54_red.ldr for U400.
Loader File is provided with FlashRW.
C. Select Port configurations for USB Port.
USB port should be selected the USB1.
You have to do FlashRW configuration only at the first time of installation
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