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...	...	@@ -314,6 +314,7 @@
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	317	+
317	317	= 6. Downlink Issue ~-~- Packet REJECTED, unsupported frequency =
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...	...	@@ -349,6 +349,7 @@
349	349	**Change to fix frequency:  AT+CHS=904900000**
350	350	**Change to fix DR:  AT+DR=0**
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	353	+
352	352	[[image:image-20220526165525-16.png]]
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...	...	@@ -374,6 +374,7 @@
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375	375	AT+APPSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 11 (End Node App Session Key)
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377	377	[[https:~~/~~/lorawan-packet-decoder-0ta6puiniaut.runkit.sh/?data=40c1190126800100024926272bf18bbb6341584e27e23245&nwkskey=00000000000000000000000000000111&appskey=00000000000000000000000000000111>>url:https://lorawan-packet-decoder-0ta6puiniaut.runkit.sh/?data=40c1190126800100024926272bf18bbb6341584e27e23245&nwkskey=00000000000000000000000000000111&appskey=00000000000000000000000000000111]]
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379	379	[[image:image-20220526171029-20.png]]
...	...	@@ -385,13 +385,15 @@
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386	386	= 8. Why i see uplink 0x00 periodcally on the LHT65 v1.8 firmware =
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388	388	Since firmware v1.8, LHT65 will send MAC command to request time, in the case if DR only support max 11 bytes, this MAC command will be bundled to a separate uplink payload with 0x00.
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391	391	= 9. Why do I see a "MIC Mismatch" error message from the server? =
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	397	+
393	393	(((
394		-1)If the user receives a "MIC Mismatch" message after registering the node on the server.
	399	+1)  If the user receives a "MIC Mismatch" message after registering the node on the server.
395	395	)))
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397	397	(((
...	...	@@ -413,11 +413,14 @@
413	413	* (((
414	414	If a node is registered with multiple servers, it may also cause the "mic mismatch" error.
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417	417	)))
418	418
419	419	= 10. Why i got the payload only with "0x00" or "AA~=~="? =
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421	421	* If you are using US915, AU915 and AS923 frequencies.This is normal phenomenon.
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423	423	(((
...	...	@@ -434,11 +434,14 @@
434	434	* (((
435	435	Some node decoders may not have filtering function, or you need decoders of other servers and formats. Please send an email to [[david.huang@dragino.cc>>mailto:david.huang@dragino.cc]]
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438	438	)))
439	439
440	440	= 11. Why my Dev EUI and APP EUI is 0x000000000000, how to solve? =
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442	442	(((
443	443	It is possible the keys is erased during upgrading of firmware. and the console output shows below after AT+CFG
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...	...	@@ -469,6 +469,8 @@
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470	470	(((
471	471	You can rewrites the keys by running commands in AT Console
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472	472	)))
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474	474	(((