Hello Quectel Support,
I need the signed authentication file auth_sv5.auth (or the equivalent DA_Authentication.cfg) for the following module and firmware combination. It is required to complete a firmware re-flash on a device whose rootfs is corrupted.
Module identification
| Item | Value |
|---|---|
| Module P/N | RG500LEUAP-E55-UGASA |
| Product family | RG500L-EU (QuecOpen) |
| SoC | MediaTek MT6890 (MTK T750), “MT6880/MT6890 Modem” |
| Firmware package | RG500LEUACR04A06M8G_OCPU_30.202.30.202 |
| Firmware release notes | Quectel_RG500L-EU-AC_QuecOpen_Firmware_Release_Notes_V0406_30.202.30.202.pdf (included in package) |
| Preloader build | 20251202-095636 |
loader_ext build |
20260327-092313 |
| ATF build | v1.6(debug), Feb 16 2026 |
| HW subcode | 0x8a00 |
| HW Ver | 0xca01 |
| SW Ver | 0x1 |
| ME_ID | 2A89263494E179E2C9FD527E1C40D0FE |
Problem summary
The device bootloops approximately 80 seconds after kernel handoff. Inspection via the LK UART console showed:
-
Slot A
rootfs_a(mmc0p28) — valid SquashFS 4.0 (XZ, ~60 MB of 64 MB used) -
Slot B
rootfs_b(mmc0p41) — overwritten with a raw ARM kernel image (first 8 bytes06 00 00 EA 4D 04 00 EA), unusable as fallback -
A/B metadata:ab_suffix: _a, slot Apriority: 15, slot Bpriority: 0,ab_retry: 0,ab_boot_success: 1 -
sboot_state = 0x1,lock_state = 0x1,img_auth_required = 1 -
[SBC] ROOTFS_SIG_VFY Successon every boot -
/etc/preinitruns but does not reach the OpenWrt network stack
I need to flash the OEM firmware package to restore both slots. The package is complete and correct, but the bootrom rejects the DA file because the required authentication file is not included in the download.