RG-S5750-48GT4XS-HP-H can't boot.

Hello,
Sorry, my English not good
I have a switch with model RG-S5750-48GT4XS-HP-H that has been factory flashed, and now I can't use the switch. With log:
Can't find main kernel.
Start auto upgrade main. Ctrl+C to cancel.
Local IP: 192.168.64.31
Remote IP: 192.168.64.1
Filename: rgos.bin
MAC Addresses: 80:05:88:43:28:48
TFTP Ports: 69
MAC Addresses (backplane):
TFTP Ports (backplane): 60001
Interfaces: eth0
TFTP: Detect tftp port 69 ...
TFTP: Detect MAC address 80:05:88:43:28:48
I can't find the firmware to fix it on the support page. I hope you guys can help me fix it.

Hello,

Pls refer to this guide to recover your firmware : https://community.ruijienetworks.com/forum.php?mod=viewthread&tid=1731
This is fiemware download link: https://www.ruijie.com/en-global/resources/software/s5750-h-series-switch-firmware/11-4-1-b7p1/

Best regards,
Micca

GTAC-Micca replied at 2025-7-3 18:34
Hello,

Pls refer to this guide to recover your firmware : https://community.ruijienetworks.com/foru ...

thanks for replying, i tried that firmware but when i upgrade it the system shows the above error.

Press a key to run the command: 2
Plz enter the Local IP [192.168.64.31]:
Plz enter the Remote IP [192.168.64.1]:
Plz enter the Filename [rgos.bin]:
TFTP: Detect tftp port 69 ...
TFTP: Detect MAC address 80:05:88:43:28:48 ...

rgos.bin ?% | | 73.5K 0:00:00 TSP
rgos.bin 100% |*******************************| 79403k 0:00:00 ETA

TFTP: Successfully downloaded file.
File size: 81309066 bytes
File md5sum : 2778d9e2f75b3dde8eeef6d17be51390
Checking file, keep power on and wait please...
Error: Package list check failed.
Security check is failed.

====== Rboot Menu (Ctrl+Z to upper level) ======
Tftp utilities.
************************************************
0. Upgrade uboot/bios program.
1. Upgrade rboot program.
2. Upgrade main program.
3. Upgrade the entire device by distribute package.
4. Burn the total FlashROM by this downloaded file.
----------------------------------------------------------------------------------------------
Have I made a mistake somewhere?

Dang Thieu replied at 2025-7-3 20:10
thanks for replying, i tried that firmware but when i upgrade it the system shows the above error. ...

Hello,

1. Could you try to recover the version again and then copy out the complete log for me? A complete log from startup to the end.
2. Was the version you imported downloaded from the link I sent? Could you show me the version number?
3. Do you still remember the original version number of the device? Is it 11.X or 12.X?

Best regadrs,
Micca

GTAC-Micca replied at 2025-7-3 23:44
Hello,

1. Could you try to recover the version again and then copy out the complete log for me? A ...

This is the log when I try to restore, I downloaded it from the link you sent, I checked it by MD5 and it matches.

    TOP menu items.
************************************************
    0. Tftp utilities.
    1. X/Y/ZModem utilities.
    2. Run main.
    3. SetMac utilities.
    4. Scattered utilities.
************************************************
Press a key to run the command: 0
====== Rboot Menu (Ctrl+Z to upper level) ======
    Tftp utilities.
************************************************
    0. Upgrade uboot/bios program.
    1. Upgrade rboot program.
    2. Upgrade main program.
    3. Upgrade the entire device by distribute package.
    4. Burn the total FlashROM by this downloaded file.
************************************************
Press a key to run the command: 2
Plz enter the Local IP [192.168.64.31]:
Plz enter the Remote IP [192.168.64.1]:
Plz enter the Filename [rgos.bin]:
    TFTP: Detect tftp port 69 ...
    TFTP: Detect MAC address 80:05:88:43:28:48 ...

rgos.bin               ?% |                               | 127.0K  0:00:00 TSP
rgos.bin             100% |*******************************| 79403k  0:00:00 ETA

    TFTP: Successfully downloaded file.
    File size   : 81309066 bytes
    File md5sum : 2778d9e2f75b3dde8eeef6d17be51390
    Checking file, keep power on and wait please ...
    Error: Package list check fail.
    Security check is failed.

====== Rboot Menu (Ctrl+Z to upper level) ======
    Tftp utilities.
************************************************
    0. Upgrade uboot/bios program.
    1. Upgrade rboot program.
    2. Upgrade main program.
    3. Upgrade the entire device by distribute package.
    4. Burn the total FlashROM by this downloaded file.
************************************************
Press a key to run the command:

I have checked the information of my same type switches
I tried to find the same firmware version but couldn't find it

Ruijie#show version
System description      : Ruijie 10G Ethernet Switch with PoE(S5750-48GT4XS-HP-H) By Ruijie Networks
System start time       : 2025-07-03 12:44:03System uptime           : 0:00:02:05
System hardware version : 1.20System software version : S5700H_RGOS 12.6(2)B1303, Release(09242807)
System patch number     : NA
System serial number    : G1P31R600119C
System boot version     : 1.4.12(Master) 1.4.8(Slave)
System rboot version    : 1.1.12
Module information:  Slot 0 : S5750-48GT4XS-HP-H
System uptime       : 0:00:02:05
Hardware version    : 1.20
Boot version        : 1.4.12(Master) 1.4.8(Slave)
Rboot version       : 1.1.12
Software version    : S5700H_RGOS 12.6(2)B1303, Release(09242807)    Serial number       : G1P31R600119C

Dang Thieu replied at 2025-7-4 16:47
This is the log when I try to restore, I downloaded it from the link you sent, I checked it by MD5 ...

We are very sorry that your device belongs to the device sold in Chinese Mainland. According to the terms of service, when the device is not used in the Chinese Mainland, it will no longer be able to provide you with technical support services and RMA services. It is recommended that you seek technical support and settlement solutions from the partner who sold it.You can get support for domestic Chinese devices through this website：https://ocs.ruijie.com.cn/