Help needed in repairing our broken RM502Q-AE

Forum rules
Use the SEARCH function for related topics PRIOR to posting a new topic on the same subject.
Post Reply
qbe0140
Posts: 1
Joined: Mon Nov 21, 2022 9:00 am
Has thanked: 0
Been thanked: 0

Help needed in repairing our broken RM502Q-AE

Post by qbe0140 »

Context to what broke it:
1. Accidentally flashed RM502Q-EA firmware through QFirehose_Linux_Android_1.4.9, bricking the RM502Q-AE.
2. Had to short a specific circle on the back of the RM502Q-AE module, then flashed via "QFirehose -e firmware.zip"; -e had to be used, a normal flash didn't work.

Modem enclosure: ZBT WG1608 16M powered by a 12V 6A 72W charger; also broken on Wireless Haven's USB 5G modem enclosure connected to a Linksys WRT1900ACS.

NOTES: socat - /dev/ttyUSB2,crnl has a high change of making /dev/ttyUSB2 "TIMEOUT ERROR".

Run 1.

Code: Select all

root@ROOter:~# socat - /dev/ttyUSB2,crnl
AT+CNMI?
+CNMI: 2,1,0,0,0

OK
AT+QINDCFG="smsincoming"
+QINDCFG: "smsincoming",0

OK
AT+QINDCFG="all"
+QINDCFG: "all",1

OK
AT+CGMM
RM502Q-AE

OK
AT+QNWPREFCFG="lte_band"
+QNWPREFCFG: "lte_band",1:2:3:4:5:7:8:12:13:14:18:19:20:25:26:28:29:30:32:34:38:39:40:41:42:43:46:48:66:71

OK
AT+QNWPREFCFG="nsa_nr5g_band"
+QNWPREFCFG: "nsa_nr5g_band",1:2:3:5:7:8:12:20:25:28:38:40:41:48:66:71:77:78:79

OK
AT+QNWPREFCFG="nr5g_band"
+QNWPREFCFG: "nr5g_band",1:2:3:5:7:8:12:20:25:28:38:40:41:48:66:71:77:78:79

OK
AT+CGMM
RM502Q-AE

OK
AT+QNWPREFCFG="mode_pref"
+QNWPREFCFG: "mode_pref",AUTO

OK
AT+CGMM
RM502Q-AE

OK
AT+CGMM
RM502Q-AE

OK
AT+QNWPREFCFG="mode_pref"
+QNWPREFCFG: "mode_pref",AUTO

OK
at+cpin?
+CPIN: READY

OK
AT+CFUN=1
+CME ERROR: 0
ATI
Quectel
RM502Q-AE
Revision: RM502QAEAAR13A02M4G

OK
AT+CNUM
+CNUM: ,"1**********",129

OK
AT+CPBR=?
+CPBR: (1-100),40,30

OK
AT+CGMI
Quectel

OK
AT+CGMM
RM502Q-AE

OK
AT+CGSN
35811610061****

OK
ATI5
Quectel
RM502Q-AE
Revision: RM502QAEAAR13A02M4G

OK
AT+CGMM
RM502Q-AE

OK
AT+QNWPREFCFG="mode_pref"
+QNWPREFCFG: "mode_pref",AUTO

OK
ATE1
OK
AT+CTZU=1
OK
AT$QCPBMPREF?
$QCPBMPREF: 1
1 -- Apps 1 Local  Phone Book

OK
AT+QLWCFG="startup"
+QLWCFG: "startup",0

OK
AT+QCFG="ims"
+QCFG: "ims",1,0

OK
AT+QCFG="ims",1
OK
AT+CIMI
310260702691424

OK
AT+CRSM=176,28423,0,0,9
+CRSM: 144,0,"083901627020964142"

OK
AT+CRSM=176,12258,0,0,10
+CRSM: 144,0,"981062700027964142F6"

OK
AT+CFUN=1,1
AT+CFUN=1,1
OK
root@ROOter:~#
Image

Run 2 (not complete logs, didn't use socat for this one).

Code: Select all

Mon Nov 21 08:56:55 2022 : /dev/ttyUSB2 AT+CNMI?
+CNMI: 2,1,0,0,0
OK
  
Mon Nov 21 08:56:57 2022 : /dev/ttyUSB2 AT+QINDCFG="smsincoming"
+QINDCFG: "smsincoming",0
OK
  
Mon Nov 21 08:56:59 2022 : /dev/ttyUSB2 AT+QINDCFG="all"
+QINDCFG: "all",0
OK
  
Mon Nov 21 08:57:00 2022 : /dev/ttyUSB2 AT+CGMM
RM502Q-AE
OK
  
Mon Nov 21 08:57:01 2022 : /dev/ttyUSB2 AT+QNWPREFCFG="lte_band"
+QNWPREFCFG: "lte_band",1:2:3:4:5:7:8:12:13:14:18:19:20:25:26:28:29:30:32:34:38:39:40:41:42:43:46:48:66:71
OK
  
Mon Nov 21 08:57:04 2022 : /dev/ttyUSB2 AT+QNWPREFCFG="nsa_nr5g_band"
+QNWPREFCFG: "nsa_nr5g_band",1:2:3:5:7:8:12:20:25:28:38:40:41:48:66:71:77:78:79
OK
  
Mon Nov 21 08:57:06 2022 : /dev/ttyUSB2 AT+QNWPREFCFG="nr5g_band"
+QNWPREFCFG: "nr5g_band",1:2:3:5:7:8:12:20:25:28:38:40:41:48:66:71:77:78:79
OK
  
Mon Nov 21 08:57:07 2022 : /dev/ttyUSB2 AT+CGMM
RM502Q-AE
OK
  
Mon Nov 21 08:57:09 2022 : /dev/ttyUSB2 AT+QNWPREFCFG="mode_pref"
+QNWPREFCFG: "mode_pref",AUTO
OK
  
Mon Nov 21 08:57:10 2022 : /dev/ttyUSB2 AT+CGMM
RM502Q-AE
OK
  
Mon Nov 21 08:57:12 2022 : /dev/ttyUSB2 AT+CGMM
RM502Q-AE
OK

Mon Nov 21 08:57:14 2022 : /dev/ttyUSB2 AT+QNWPREFCFG="mode_pref"
+QNWPREFCFG: "mode_pref",AUTO
OK
  
Mon Nov 21 08:57:16 2022 : /dev/ttyUSB2 at+cpin?
+CPIN: READY
OK

+CGDCONT: (1-42),"IPV6",,,(0-3),(0-4),(0-1),(0-1),,,,,,,,,(0-1),,(0-1),,,(0-1)
+CGDCONT: (1-42),"IPV4V6",,,(0-3),(0-4),(0-1),(0-1),,,,,,,,,(0-1),,(0-1),,,(0-1)
OK
  
Mon Nov 21 08:57:38 2022 : /dev/ttyUSB2 AT+CGDCONT?;+CFUN?
+CGDCONT: 1,"IPV6","fast.t-mobile.com","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0,,,,,,,,,"",,,,0
+CGDCONT: 2,"IP","ims","0.0.0.0",0,0,0,0,,,,,,,,,"",,,,0
+CGDCONT: 3,"IPV4V6","sos","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,1,,,,,,,,,"",,,,1
+CGDCONT: 4,"IPV4V6","tmus","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0,,,,,,,,,"",,,,0
+CGDCONT: 5,"IPV4V6","h2g2","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0,,,,,,,,,"",,,,0
+CFUN: 5
OK
  
Mon Nov 21 08:57:39 2022 : /dev/ttyUSB2 AT+CFUN=1
+CME ERROR: 0
  
Mon Nov 21 08:57:46 2022 : /dev/ttyUSB2 AT+CMGS=?;+CMGL=?;+CMGR=?
+CMGL: (0-4)
OK
  
Mon Nov 21 08:57:47 2022 : /dev/ttyUSB2 AT+CMGF=0
OK
  
Mon Nov 21 08:57:50 2022 : /dev/ttyUSB2 AT+CPMS="SM","SM","SM"
+CPMS: 0,30,0,30,0,30
OK
  
Mon Nov 21 08:57:52 2022 : /dev/ttyUSB2 AT+CPMS="ME"
+CPMS: 0,255,0,30,0,30
OK
  
Mon Nov 21 08:57:55 2022 : /dev/ttyUSB2 AT+CPMS="ME","SM","SM"
+CPMS: 0,255,0,30,0,30
OK
  
Mon Nov 21 08:57:56 2022 : /dev/ttyUSB2 AT+CPMS="SM","SM","SM"
+CPMS: 0,30,0,30,0,30
OK
  
Mon Nov 21 08:57:57 2022 : /dev/ttyUSB2 AT+CMGL=4
OK
  
Mon Nov 21 08:58:03 2022 : /dev/ttyUSB2 AT+CPMS="ME","SM","SM"
+CPMS: 0,255,0,30,0,30
OK
  
Mon Nov 21 08:58:05 2022 : /dev/ttyUSB2 AT+CPMS="SM","SM","SM"
+CPMS: 0,30,0,30,0,30
OK
  
Mon Nov 21 08:58:11 2022 : /dev/ttyUSB2 AT+COPS=0
ERROR
Image

Thank you for your time.
SetecAstro
Posts: 5
Joined: Tue Jan 18, 2022 12:31 pm
Has thanked: 1 time
Been thanked: 1 time

Re: Help needed in repairing our broken RM502Q-AE

Post by SetecAstro »

I just dealt with the "SIM Missing" issue on my WG3526/ NEXP1GO with RM502.

The cause was the SIM enclosure pins not making full contact with the SIM card. My error was CME Error: 13. My solution was to change the modem adapter (PCIe to M.2) to one that has nano SIM slots. You can pick one up in the Wireless Haven store for about $20. If not, you will need to remove your SIM enclosure and put tension back on the pin contactors.
https://thewirelesshaven.com/shop/mini- ... m-adapter/
mrgodai
Posts: 2
Joined: Sat Dec 31, 2022 9:48 am
Has thanked: 0
Been thanked: 0

Re: Help needed in repairing our broken RM502Q-AE

Post by mrgodai »

when you "2. Had to short a specific circle on the back of the RM502Q-AE module, then flashed via "QFirehose -e firmware.zip"; -e had to be used, a normal flash didn't work." did you flash back the original firmware or the new one?
_bsd0
Posts: 3
Joined: Wed Jan 26, 2022 6:09 am
Has thanked: 0
Been thanked: 0

Re: Help needed in repairing our broken RM502Q-AE

Post by _bsd0 »

I recently flashed my RM502q-ae with firehose -e and the modem became inoperable. It was stuck in FTM, factory test mode. Someone from Quectel sent me a new XQCN partition file.
This apparently also deletes the calibrated data which you need to do RF testing. If you're not doing RF testing then simply replacing the xqcn file will get the modem back up and running
User avatar
Rich Hathaway
Posts: 542
Joined: Mon Mar 08, 2021 2:41 pm
Has thanked: 8 times
Been thanked: 186 times

Re: Help needed in repairing our broken RM502Q-AE

Post by Rich Hathaway »

Well that says alot about Quectel, they are willing to offer you support if they knew it got messed up by a firehose loader, that is some good customer service right there.
Post Reply

Return to “Quectel Modems”