
I tried this:
If you bricked your X50(mid) with a WM5 rom trying to downgrade to WM2003 SE
Step 1: Your procedure is similiar to the updating 2003 SE rom one
Step 1a:Get os and bootloader rom image at Download AximX50_WM2k3_A05_EN.rar, upload your files and earn money.
Step 2: Extract files to any folder using Winrar
Step 3: Go to the folder where you extrated the files in the RAR archive
Step 4: Find the 4 files that have X50 in the filename (should be 1 (has a filename like DiMa_K_A05_X50_WM2k3_ENG) .nb0 file and (same naming conventions) 1 .crc file) and transfer them to the SD Card
Step 4a: Take the bootloader file and it's crc file (should be 1 (has a filename like DiMa_B_A05_X50_WM2k3_ENG) .nb0 file and (same naming conventions) 1 .crc file) and transfer them to the SD Card
Step 4b: Rename the bootloader file (on the SD card) from "DiMa_B_A05_X50_WM2k3_ENG.nb0" to "WM50_B_A05_X50_WM2k3_ENG.nb0"
Step 4c: Rename the bootloader crc file (on SD Card) from "DiMa_B_A05_X50_WM2k3_ENG_nb0.crc" to "WM50_B_A05_X50_WM2k3_ENG_nb0.crc"
Step 5: Take SD Card out of SD Card reader and put it in the axim
Step 6: Hold the power button and the wireless button at the same time, and quickly tap the soft reset button (little hole on back of axim near DELL logo and press it with something like a pencil or pen) 2 or 3 times
Step 6a: Watch screen for SD Card loader (should see the hard reset screen, but wait a few seconds until it shows up)
Step 7: choose the file "WM50_B_A05_X50_WM2k3_ENG.nb0" and follow any on-screen directions
Step 7a: repeat steps 6 and 6a
Step 7b: choose the file "DiMa_K_A05_X50_WM2k3_ENG.nb0" and follow any on-screen directions
Step 8: watch your axim come back to life and enjoy your axim
RESULT: device can not turn on anymore! what to do now?