126 Odpowiedź przez kszaq

  • kszaq
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Odp: Stick 5G/LTE na SDX55

First backup was made with dd from mtd25, like you asked for.

127 Odpowiedź przez kszaq (edytowany przez kszaq 2026-04-17 21:26:38)

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Odp: Stick 5G/LTE na SDX55

I tried to recreate UBI image for system partition.

Description of the process:
1. Make mtd25 partition backup with script from OpenWRT Wiki: https://openwrt.org/docs/guide-user/ins … ric.backup
2. Make ubi0_1 to ubi1_4 backup with the same script, slightly modified.
3. On modem, mount rootfs to a separate dir:

mkdir -p /tmp/rootfs ; mount -o ro /dev/ubi0_0 /tmp/rootfs

4. On PC, use ubireader_utils_info to get ubi creation parameters.
5. Run mkfs.ubifs on modem with parameters discovered by ubireader, then transfer it to PC:

mkfs.ubifs -m 4096 -e 253952 -c 2146 -x lzo -f 8 -k r5 -p 1 -l 4 -r /tmp/rootfs -o /tmp/ubi0_0.ubifs

6. Create ubi image with re-created ubi0_0 and remaining partitions directly from binary backup:

ubinize -p 262144 -m 4096 -O 4096 -s 4096 -x 1 -Q 783098594 -o img-783098594.ubi img-783098594.ini

Result: https://fromsmash.com/u0fDPpGa_X-dt (MD5 7f38237a42a21a610a8f35f40b244842)

128 Odpowiedź przez changliuxian

  • Zarejestrowany: 2026-04-05
  • Posty: 31

Odp: Stick 5G/LTE na SDX55

kszaq napisał/a:

I tried to recreate UBI image for system partition.

Description of the process:
1. Make mtd25 partition backup with script from OpenWRT Wiki: https://openwrt.org/docs/guide-user/ins … ric.backup
2. Make ubi0_1 to ubi1_4 backup with the same script, slightly modified.
3. On modem, mount rootfs to a separate dir:

mkdir -p /tmp/rootfs ; mount -o ro /dev/ubi0_0 /tmp/rootfs

4. On PC, use ubireader_utils_info to get ubi creation parameters.
5. Run mkfs.ubifs on modem with parameters discovered by ubireader, then transfer it to PC:

mkfs.ubifs -m 4096 -e 253952 -c 2146 -x lzo -f 8 -k r5 -p 1 -l 4 -r /tmp/rootfs -o /tmp/ubi0_0.ubifs

6. Create ubi image with re-created ubi0_0 and remaining partitions directly from binary backup:

ubinize -p 262144 -m 4096 -O 4096 -s 4096 -x 1 -Q 783098594 -o img-783098594.ubi img-783098594.ini

Result: https://fromsmash.com/u0fDPpGa_X-dt (MD5 7f38237a42a21a610a8f35f40b244842)


Thank you very much for your help. I tested so many images and the problem is the same: the EDL tool cannot skip bad blocks on the NAND when flashing, so after flashing the firmware, the bad blocks remain in the usrfs partition, causing the UBI reconstruction to fail repeatedly.

129 Odpowiedź przez kszaq

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Odp: Stick 5G/LTE na SDX55

Maybe it's worth a try to flash it via fastboot or modify OTA package to write raw system partition image.

130 Odpowiedź przez changliuxian (edytowany przez changliuxian 2026-04-18 14:30:45)

  • Zarejestrowany: 2026-04-05
  • Posty: 31

Odp: Stick 5G/LTE na SDX55

kszaq napisał/a:

Maybe it's worth a try to flash it via fastboot or modify OTA package to write raw system partition image.



I tested with fastboot, but the image sizes are inconsistent, so I cannot use this backup to flash. I also tested the OTA incremental package with recovery, and it didn't work either.

131 Odpowiedź przez changliuxian

  • Zarejestrowany: 2026-04-05
  • Posty: 31

Odp: Stick 5G/LTE na SDX55

kszaq napisał/a:

Maybe it's worth a try to flash it via fastboot or modify OTA package to write raw system partition image.

I have written my own rawprogram_nand_p4K_b256K_update.xml, but even using Qualcomm QFIL to flash it, I cannot mark and skip bad blocks.


2026-04-20 02:40:13.808    02:39:44: INFO: {<program> FILE: 'C:\Users\lxh\Desktop\edl\sec.img'}
2026-04-20 02:40:13.808    02:39:44: INFO: {<program> (1.00 MB) 256 sectors needed at location 52224 on LUN 0}
2026-04-20 02:40:13.809    02:39:44: INFO: =======================================================
2026-04-20 02:40:13.809    
2026-04-20 02:40:13.809    
2026-04-20 02:40:13.809    02:39:44: INFO: TARGET SAID: 'INFO: Calling handler for program start'
2026-04-20 02:40:13.809    
2026-04-20 02:40:13.813    02:39:44: INFO: TARGET SAID: 'INFO: NAND was previously open, returning existing handle 0
2026-04-20 02:40:13.815    '
2026-04-20 02:40:13.815    
2026-04-20 02:40:13.815    02:39:44: INFO: Overall to target  0.219 seconds (4.57 MBps)
2026-04-20 02:40:13.815    02:39:44: INFO: {percent files transferred  38.72%}
2026-04-20 02:40:13.815    02:39:44: INFO: 
2026-04-20 02:40:13.815    02:39:44: INFO: =======================================================
2026-04-20 02:40:13.815    02:39:44: INFO: ==================== {SUCCESS} ========================
2026-04-20 02:40:13.819    02:39:44: INFO: =======================================================
2026-04-20 02:40:13.819    
2026-04-20 02:40:13.820    
2026-04-20 02:40:13.820    02:39:44: INFO: {percent files transferred  38.72%}
2026-04-20 02:40:13.820    02:39:44: INFO: In handleProgram('oem.img')
2026-04-20 02:40:13.822    02:39:44: INFO: Looking for file 'oem.img'
2026-04-20 02:40:13.822    02:39:44: INFO: =======================================================
2026-04-20 02:40:13.824    02:39:44: INFO: {<program> FILE: 'C:\Users\lxh\Desktop\edl\oem.img'}
2026-04-20 02:40:13.825    02:39:44: INFO: {<program> (43.00 MB) 11008 sectors needed at location 52480 on LUN 0}
2026-04-20 02:40:13.826    02:39:44: INFO: =======================================================
2026-04-20 02:40:13.826    
2026-04-20 02:40:13.826    
2026-04-20 02:40:13.826    02:39:44: INFO: TARGET SAID: 'INFO: Calling handler for program start'
2026-04-20 02:40:13.826    
2026-04-20 02:40:13.826    02:39:44: INFO: TARGET SAID: 'INFO: NAND was previously open, returning existing handle 0
2026-04-20 02:40:13.826    '
2026-04-20 02:40:13.830    
2026-04-20 02:40:13.830    02:39:46: INFO: Overall to target  2.000 seconds (4.14 MBps)
2026-04-20 02:40:13.830    02:39:46: INFO: {percent files transferred  40.38%}
2026-04-20 02:40:13.831    02:39:48: INFO: Overall to target  4.000 seconds (4.05 MBps)
2026-04-20 02:40:13.831    02:39:48: INFO: {percent files transferred  41.96%}
2026-04-20 02:40:13.831    02:39:50: INFO: Overall to target  6.000 seconds (3.97 MBps)
2026-04-20 02:40:13.831    02:39:50: INFO: {percent files transferred  43.48%}
2026-04-20 02:40:13.836    02:39:52: INFO: Overall to target  8.000 seconds (3.89 MBps)
2026-04-20 02:40:13.836    02:39:52: INFO: {percent files transferred  44.94%}
2026-04-20 02:40:13.837    02:39:54: INFO: Overall to target 10.000 seconds (3.82 MBps)
2026-04-20 02:40:13.838    02:39:54: INFO: {percent files transferred  46.34%}
2026-04-20 02:40:13.838    02:39:55: INFO: Overall to target 11.406 seconds (3.77 MBps)
2026-04-20 02:40:13.841    02:39:55: INFO: {percent files transferred  47.31%}
2026-04-20 02:40:13.841    02:39:55: INFO: 
2026-04-20 02:40:13.842    02:39:55: INFO: =======================================================
2026-04-20 02:40:13.842    02:39:55: INFO: ==================== {SUCCESS} ========================
2026-04-20 02:40:13.842    02:39:55: INFO: =======================================================
2026-04-20 02:40:13.842    
2026-04-20 02:40:13.842    
2026-04-20 02:40:13.842    02:39:55: INFO: {percent files transferred  47.31%}
2026-04-20 02:40:13.846    02:39:55: INFO: In handleProgram('system.img')
2026-04-20 02:40:13.847    02:39:55: INFO: Looking for file 'system.img'
2026-04-20 02:40:13.848    02:39:55: INFO: =======================================================
2026-04-20 02:40:13.848    02:39:55: INFO: {<program> FILE: 'C:\Users\lxh\Desktop\edl\system.img'}
2026-04-20 02:40:13.848    02:39:55: INFO: {<program> (264.00 MB) 67584 sectors needed at location 63488 on LUN 0}
2026-04-20 02:40:13.848    02:39:55: INFO: =======================================================
2026-04-20 02:40:13.848    
2026-04-20 02:40:13.848    
2026-04-20 02:40:13.850    02:39:55: INFO: TARGET SAID: 'INFO: Calling handler for program start'
2026-04-20 02:40:13.852    
2026-04-20 02:40:13.852    02:39:55: INFO: TARGET SAID: 'INFO: NAND was previously open, returning existing handle 0
2026-04-20 02:40:13.853    '
2026-04-20 02:40:13.853    
2026-04-20 02:40:13.854    02:39:57: INFO: Overall to target  2.000 seconds (4.17 MBps)
2026-04-20 02:40:13.854    02:39:57: INFO: {percent files transferred  48.97%}
2026-04-20 02:40:13.854    02:39:59: INFO: Overall to target  4.000 seconds (4.07 MBps)
2026-04-20 02:40:13.858    02:39:59: INFO: {percent files transferred  50.55%}
2026-04-20 02:40:13.859    02:40:01: INFO: Overall to target  6.000 seconds (3.98 MBps)
2026-04-20 02:40:13.859    02:40:01: INFO: {percent files transferred  52.07%}
2026-04-20 02:40:13.859    02:40:03: INFO: Overall to target  8.000 seconds (3.89 MBps)
2026-04-20 02:40:13.859    02:40:03: INFO: {percent files transferred  53.52%}
2026-04-20 02:40:13.863    02:40:05: INFO: Overall to target 10.000 seconds (3.82 MBps)
2026-04-20 02:40:13.863    02:40:05: INFO: {percent files transferred  54.93%}
2026-04-20 02:40:13.864    02:40:07: INFO: Overall to target 12.000 seconds (3.75 MBps)
2026-04-20 02:40:13.864    02:40:07: INFO: {percent files transferred  56.30%}
2026-04-20 02:40:13.864    02:40:09: INFO: Overall to target 14.000 seconds (3.69 MBps)
2026-04-20 02:40:13.864    02:40:09: INFO: {percent files transferred  57.61%}
2026-04-20 02:40:13.869    02:40:11: INFO: Overall to target 16.000 seconds (3.63 MBps)
2026-04-20 02:40:13.870    02:40:11: INFO: {percent files transferred  58.89%}
2026-04-20 02:41:25.806    02:40:13: INFO: Overall to target 18.000 seconds (3.57 MBps)
2026-04-20 02:41:25.806    02:40:13: INFO: {percent files transferred  60.13%}
2026-04-20 02:41:25.806    02:40:15: INFO: Overall to target 20.000 seconds (3.51 MBps)
2026-04-20 02:41:25.806    02:40:15: INFO: {percent files transferred  61.34%}
2026-04-20 02:41:25.811    02:40:17: INFO: Overall to target 22.000 seconds (3.46 MBps)
2026-04-20 02:41:25.812    02:40:17: INFO: {percent files transferred  62.51%}
2026-04-20 02:41:25.812    02:40:19: INFO: Overall to target 24.000 seconds (3.41 MBps)
2026-04-20 02:41:25.814    02:40:19: INFO: {percent files transferred  63.65%}
2026-04-20 02:41:25.814    02:40:21: INFO: Overall to target 26.000 seconds (3.37 MBps)
2026-04-20 02:41:25.816    02:40:21: INFO: {percent files transferred  64.77%}
2026-04-20 02:41:25.817    02:40:23: INFO: Overall to target 28.000 seconds (3.32 MBps)
2026-04-20 02:41:25.817    02:40:23: INFO: {percent files transferred  65.86%}
2026-04-20 02:41:25.817    02:40:25: INFO: Overall to target 30.000 seconds (3.28 MBps)
2026-04-20 02:41:25.817    02:40:25: INFO: {percent files transferred  66.93%}
2026-04-20 02:41:25.821    02:40:27: INFO: Overall to target 32.000 seconds (3.24 MBps)
2026-04-20 02:41:25.823    02:40:27: INFO: {percent files transferred  67.98%}
2026-04-20 02:41:25.823    02:40:29: INFO: Overall to target 34.000 seconds (3.20 MBps)
2026-04-20 02:41:25.823    02:40:29: INFO: {percent files transferred  69.01%}
2026-04-20 02:41:25.823    02:40:31: INFO: Overall to target 36.000 seconds (3.16 MBps)
2026-04-20 02:41:25.827    02:40:31: INFO: {percent files transferred  70.02%}
2026-04-20 02:41:25.827    02:40:33: INFO: Overall to target 38.000 seconds (3.13 MBps)
2026-04-20 02:41:25.830    02:40:33: INFO: {percent files transferred  71.01%}
2026-04-20 02:41:25.830    02:40:35: INFO: Overall to target 40.000 seconds (3.09 MBps)
2026-04-20 02:41:25.832    02:40:35: INFO: {percent files transferred  71.99%}
2026-04-20 02:41:25.833    02:40:37: INFO: Overall to target 42.000 seconds (3.06 MBps)
2026-04-20 02:41:25.833    02:40:37: INFO: {percent files transferred  72.95%}
2026-04-20 02:41:25.834    02:40:39: INFO: Overall to target 44.000 seconds (3.03 MBps)
2026-04-20 02:41:25.834    02:40:39: INFO: {percent files transferred  73.90%}
2026-04-20 02:41:25.834    02:40:41: INFO: Overall to target 46.000 seconds (3.00 MBps)
2026-04-20 02:41:25.838    02:40:41: INFO: {percent files transferred  74.84%}
2026-04-20 02:41:25.838    02:40:43: INFO: Overall to target 48.000 seconds (2.97 MBps)
2026-04-20 02:41:25.839    02:40:43: INFO: {percent files transferred  75.76%}
2026-04-20 02:41:25.839    02:40:45: INFO: Overall to target 50.000 seconds (2.94 MBps)
2026-04-20 02:41:25.839    02:40:45: INFO: {percent files transferred  76.66%}
2026-04-20 02:41:25.839    02:40:47: INFO: Overall to target 52.000 seconds (2.91 MBps)
2026-04-20 02:41:25.844    02:40:47: INFO: {percent files transferred  77.54%}
2026-04-20 02:41:25.845    02:40:49: INFO: Overall to target 54.000 seconds (2.89 MBps)
2026-04-20 02:41:25.846    02:40:49: INFO: {percent files transferred  78.42%}
2026-04-20 02:41:25.846    02:40:51: INFO: Overall to target 56.000 seconds (2.86 MBps)
2026-04-20 02:41:25.846    02:40:51: INFO: {percent files transferred  79.29%}
2026-04-20 02:41:25.849    02:40:53: INFO: Overall to target 58.000 seconds (2.84 MBps)
2026-04-20 02:41:25.849    02:40:53: INFO: {percent files transferred  80.14%}
2026-04-20 02:41:25.850    02:40:55: INFO: Overall to target 60.000 seconds (2.81 MBps)
2026-04-20 02:41:25.850    02:40:55: INFO: {percent files transferred  80.98%}
2026-04-20 02:41:25.850    02:40:57: INFO: Overall to target 62.000 seconds (2.79 MBps)
2026-04-20 02:41:25.850    02:40:57: INFO: {percent files transferred  81.81%}
2026-04-20 02:41:25.855    02:40:59: INFO: Overall to target 64.000 seconds (2.77 MBps)
2026-04-20 02:41:25.856    02:40:59: INFO: {percent files transferred  82.63%}
2026-04-20 02:41:25.856    02:41:01: INFO: Overall to target 66.000 seconds (2.74 MBps)
2026-04-20 02:41:25.856    02:41:01: INFO: {percent files transferred  83.44%}
2026-04-20 02:41:25.856    02:41:03: INFO: Overall to target 68.000 seconds (2.72 MBps)
2026-04-20 02:41:25.860    02:41:03: INFO: {percent files transferred  84.25%}
2026-04-20 02:41:25.860    02:41:05: INFO: Overall to target 70.000 seconds (2.70 MBps)
2026-04-20 02:41:25.861    02:41:05: INFO: {percent files transferred  85.04%}
2026-04-20 02:41:25.861    02:41:07: INFO: Overall to target 72.000 seconds (2.68 MBps)
2026-04-20 02:41:25.861    02:41:07: INFO: {percent files transferred  85.83%}
2026-04-20 02:41:25.865    02:41:09: INFO: Overall to target 74.000 seconds (2.66 MBps)
2026-04-20 02:41:25.866    02:41:09: INFO: {percent files transferred  86.61%}
2026-04-20 02:41:25.867    02:41:11: INFO: Overall to target 76.000 seconds (2.64 MBps)
2026-04-20 02:41:25.867    02:41:11: INFO: {percent files transferred  87.38%}
2026-04-20 02:41:25.867    02:41:13: INFO: Overall to target 78.000 seconds (2.62 MBps)
2026-04-20 02:41:25.867    02:41:13: INFO: {percent files transferred  88.15%}
2026-04-20 02:41:25.871    02:41:15: INFO: Overall to target 80.000 seconds (2.61 MBps)
2026-04-20 02:41:25.871    02:41:15: INFO: {percent files transferred  88.90%}
2026-04-20 02:41:25.872    02:41:17: INFO: Overall to target 82.000 seconds (2.59 MBps)
2026-04-20 02:41:25.872    02:41:17: INFO: {percent files transferred  89.65%}
2026-04-20 02:41:25.872    02:41:19: INFO: Overall to target 84.000 seconds (2.57 MBps)
2026-04-20 02:41:25.872    02:41:19: INFO: {percent files transferred  90.39%}
2026-04-20 02:41:25.877    02:41:21: INFO: Overall to target 86.000 seconds (2.55 MBps)
2026-04-20 02:41:25.878    02:41:21: INFO: {percent files transferred  91.12%}
2026-04-20 02:41:25.878    02:41:23: INFO: Overall to target 88.000 seconds (2.54 MBps)
2026-04-20 02:41:25.878    02:41:23: INFO: {percent files transferred  91.85%}
2026-04-20 02:41:25.878    02:41:25: INFO: Overall to target 90.000 seconds (2.52 MBps)
2026-04-20 02:41:47.186    02:41:25: INFO: {percent files transferred  92.57%}
2026-04-20 02:41:47.186    02:41:27: INFO: Overall to target 92.000 seconds (2.50 MBps)
2026-04-20 02:41:47.187    02:41:27: INFO: {percent files transferred  93.28%}
2026-04-20 02:41:47.187    02:41:29: INFO: Overall to target 94.000 seconds (2.49 MBps)
2026-04-20 02:41:47.192    02:41:29: INFO: {percent files transferred  93.99%}
2026-04-20 02:41:47.193    02:41:31: INFO: Overall to target 96.000 seconds (2.47 MBps)
2026-04-20 02:41:47.193    02:41:31: INFO: {percent files transferred  94.69%}
2026-04-20 02:41:47.194    02:41:33: INFO: Overall to target 98.000 seconds (2.46 MBps)
2026-04-20 02:41:47.194    02:41:33: INFO: {percent files transferred  95.38%}
2026-04-20 02:41:47.197    02:41:35: INFO: Overall to target 100.000 seconds (2.44 MBps)
2026-04-20 02:41:47.197    02:41:35: INFO: {percent files transferred  96.07%}
2026-04-20 02:41:47.198    02:41:37: INFO: Overall to target 102.000 seconds (2.43 MBps)
2026-04-20 02:41:47.198    02:41:37: INFO: {percent files transferred  96.75%}
2026-04-20 02:41:47.198    02:41:39: INFO: Overall to target 104.000 seconds (2.41 MBps)
2026-04-20 02:41:47.198    02:41:39: INFO: {percent files transferred  97.43%}
2026-04-20 02:41:47.198    02:41:41: INFO: Overall to target 106.000 seconds (2.40 MBps)
2026-04-20 02:41:47.203    02:41:41: INFO: {percent files transferred  98.10%}
2026-04-20 02:41:47.204    02:41:43: INFO: Overall to target 108.000 seconds (2.39 MBps)
2026-04-20 02:41:47.204    02:41:43: INFO: {percent files transferred  98.77%}
2026-04-20 02:41:47.204    02:41:45: INFO: Overall to target 110.000 seconds (2.37 MBps)
2026-04-20 02:41:47.204    02:41:45: INFO: {percent files transferred  99.43%}
2026-04-20 02:41:47.204    02:41:47: INFO: Overall to target 111.344 seconds (2.37 MBps)
2026-04-20 02:41:47.208    02:41:47: INFO: {percent files transferred 100.00%}
2026-04-20 02:41:47.209    
2026-04-20 02:41:47.209    02:41:47: INFO: TARGET SAID: 'INFO: [426] out of good blocks, total blocks:7ff Gblocks:7fd lba:1482c375
2026-04-20 02:41:47.209    '
2026-04-20 02:41:47.213    
2026-04-20 02:41:47.214    02:41:47: INFO: TARGET SAID: 'ERROR: [1238] error : 9 
2026-04-20 02:41:47.215    '
2026-04-20 02:41:47.215    
2026-04-20 02:41:47.215    02:41:47: INFO: TARGET SAID: 'ERROR: Write Failed sector 130880, size 0 result 2'
2026-04-20 02:41:47.215    
2026-04-20 02:41:47.215    
2026-04-20 02:41:47.215         _____                    
2026-04-20 02:41:47.215        |  ___|                   
2026-04-20 02:41:47.219        | |__ _ __ _ __ ___  _ __ 
2026-04-20 02:41:47.219        |  __| '__| '__/ _ \| '__|
2026-04-20 02:41:47.219        | |__| |  | | | (_) | |   
2026-04-20 02:41:47.220        \____/_|  |_|  \___/|_|  
2026-04-20 02:41:47.220    
2026-04-20 02:41:47.220    
2026-04-20 02:41:47.220    02:41:47: {ERROR: Please see log}
2026-04-20 02:41:47.220    
2026-04-20 02:41:47.220    Writing log to 'C:\Users\lxh\AppData\Roaming\Qualcomm\QFIL\COMPORT_10\port_trace.txt', might take a minute
2026-04-20 02:41:47.224    
2026-04-20 02:41:47.225    
2026-04-20 02:41:47.226    Log is 'C:\Users\lxh\AppData\Roaming\Qualcomm\QFIL\COMPORT_10\port_trace.txt'
2026-04-20 02:41:47.226    
2026-04-20 02:41:47.226    Download Fail:FireHose Fail:FHLoader Fail:Process fail
2026-04-20 02:41:47.226    Finish Download

132 Odpowiedź przez kszaq

  • kszaq
  • Użytkownik
  • Nieaktywny
  • Zarejestrowany: 2013-06-16
  • Posty: 105

Odp: Stick 5G/LTE na SDX55

I am afraid I can no longer help here, you need someone with experience with flashing the modem.

The only thing I'd try would be:
1. Extract rootfs.ubifs from vos-system-recreated.ubi using ubireader_extract_images
2. Modify OTA package to flash it with 

write_raw_image(package_extract_file("firmware-update/rootfs.ubi"), "system");

This might work if recovery can handle NAND bad blocks.