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121	121	)))
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124		-
125	125	== 3.3 Trouble shooting ==
126	126
127	127	=== 3.3.1 General Check List ===
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129	129	1. Double check if follow up exactly the steps as manual.
130	130	1. Check if hardware works fine:
131	131	1*. check if AT command works, in both TX/RX
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134	134	1. If you use Windows10 system. Please change the flash loader to run in Windows7 compatibility mode.
135	135	1. We see a case the FT232 USB TTL adapter has reliability issue with the PC USB chipset(Intel). In this case, even above, it still has serious reliability issue for uploading. If this happen, change a PC or change a USB to TTL adapter will solve.
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137	137	== 3.4 Flash Loader ~-~- Unable to Load data from this file ==
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139	139	[[image:image-20220526174137-8.png]]