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...	...	@@ -302,8 +302,9 @@
302	302	1:0012345678}}}
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304	304
305		-== 5.3 If problem doesn’t solve ==
	305	+== 5.3 If problem doesn't solve ==
306	306
	307	+
307	307	(% style="color:red" %)**If user has checked below steps and still can't solve the problem, please send us (support @ dragino.com) the sceenshots for each step to check. They include:**
308	308
309	309	* End node console to show the transmit freuqency and DR.
...	...	@@ -311,8 +311,11 @@
311	311	* Gateway traffic (from server UI) to shows the data exchange between gateway and server.
312	312	* End Node traffic (from server UI) to shows end node activity in server.
313	313
	315	+
	316	+
314	314	= 6. Downlink Issue ~-~- Packet REJECTED, unsupported frequency =
315	315
	319	+
316	316	(((
317	317	In LoRaWAN, the gatewat will use the frequency specify by the server to transmit a packet as downlink purpose. Each Frequency band has different downlink frequency. and the gateway has a frequency range limited to transmit downlink.
318	318	)))
...	...	@@ -338,19 +338,17 @@
338	338
339	339	= 7. Decrypt a LoRaWAN Packet =
340	340
341		-~1. LHT65 End device configure:
342	342
343		-(% class="box infomessage" %)
344		-(((
345		-**Change to ABP Mode: AT+NJM=0**
346		-**Change to fix frequency: AT+CHS=904900000**
347		-**Change to fix DR: AT+DR=0**
348		-)))
	346	+(% style="color:blue" %)**1. LHT65 End device configure:**
349	349
	348	+**Change to ABP Mode:  AT+NJM=0**
	349	+**Change to fix frequency:  AT+CHS=904900000**
	350	+**Change to fix DR:  AT+DR=0**
	351	+
350	350	[[image:image-20220526165525-16.png]]
351	351
352	352
353		-2. In LG02 , configure to receive above message
	355	+(% style="color:blue" %)**2. In LG02 , configure to receive above message**
354	354
355	355	[[image:image-20220526165612-17.png]]
356	356
...	...	@@ -360,7 +360,7 @@
360	360	[[image:image-20220526171112-21.png]]
361	361
362	362
363		-3. Decode the info in web
	365	+(% style="color:blue" %)**3. Decode the info in web**
364	364
365	365	[[https:~~/~~/lorawan-packet-decoder-0ta6puiniaut.runkit.sh>>url:https://lorawan-packet-decoder-0ta6puiniaut.runkit.sh/]]
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...	...	@@ -372,6 +372,7 @@
372	372
373	373	AT+APPSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 11 (End Node App Session Key)
374	374
	377	+
375	375	[[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]]
376	376
377	377	[[image:image-20220526171029-20.png]]
...	...	@@ -383,13 +383,15 @@
383	383
384	384	= 8. Why i see uplink 0x00 periodcally on the LHT65 v1.8 firmware =
385	385
	389	+
386	386	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.
387	387
388	388
389	389	= 9. Why do I see a "MIC Mismatch" error message from the server? =
390	390
	395	+
391	391	(((
392		-1)If the user receives a "MIC Mismatch" message after registering the node on the server.
	397	+1)  If the user receives a "MIC Mismatch" message after registering the node on the server.
393	393	)))
394	394
395	395	(((
...	...	@@ -411,11 +411,14 @@
411	411	* (((
412	412	If a node is registered with multiple servers, it may also cause the "mic mismatch" error.
413	413
	419	+
	420	+
414	414
415	415	)))
416	416
417	417	= 10. Why i got the payload only with "0x00" or "AA~=~="? =
418	418
	426	+
419	419	* If you are using US915, AU915 and AS923 frequencies.This is normal phenomenon.
420	420
421	421	(((
...	...	@@ -432,11 +432,14 @@
432	432	* (((
433	433	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]]
434	434
	443	+
	444	+
435	435
436	436	)))
437	437
438	438	= 11. Why my Dev EUI and APP EUI is 0x000000000000, how to solve? =
439	439
	450	+
440	440	(((
441	441	It is possible the keys is erased during upgrading of firmware. and the console output shows below after AT+CFG
442	442	)))
...	...	@@ -467,6 +467,8 @@
467	467
468	468	(((
469	469	You can rewrites the keys by running commands in AT Console
	481	+
	482	+
470	470	)))
471	471
472	472	(((