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Getting started
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Refreshing RT55 ROM
1.
1
Copy RT55 ROM zip file to the root directory of the
Copy RT55 ROM zip file to the root directory of the
microSD card
2.
Open the battery cover, remove the battery
3.
Insert the microSD card
4.
Install the battery to the battery compartment
5.
Press and hold the power button and the F2 button
for few seconds
6.
Continue to press and hold the F2 button and
power button until the update screen appears
7.
Press F2 and select [Recovery Mode], then press
F1 to select. Update menu will then appear.
8.
Use F2 button to select update from SD card, press
the F4 button to confirm
9.
Select the update file from SD card, press F4
button to confirm
10.
After complete installation, select wipe factory reset,
press F4 button to confirm
press F4 button to confirm
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Refreshing ROM
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