Purchased an R3 mini in 2025 to use as a VPN gateway. Just started to boot from NAND and got into an infinite loop situation by watchdog action. Would like to ask for any suggestions on where to go next?
Thanks ahead for any suggestions.
Here is where the system stuck, and then it went to U-Boot menu to boot again.
[ 25.002301] payload: t-neptune-main-2111-7986-imp-MT7986_E1_ASIC_ROM_RAM_REBB_IMP-20221216134601 [ 25.085461] Chip ID: 0x00 [ 25.088197] Eco version: 0x00 [ 25.091295] Region number: 0x03 [ 25.094552] Format version: 0x02 [ 25.097864] Format flag: 0x01 [ 25.100944] Ram version: DEV_000000 [ 25.104555] Built date: 20221216134910 [ 25.108428] Common crc: 0xd2876be7 [ 25.111939] Release info: header tag = 0, total length = 0 [ 25.212197] current sync CR = 0x7 [ 25.215604] efuse_probe: efuse = deaddead [ 25.221583] sku:0x7, ADIE=MT7976 [ 25.225977] Use default BIN from:/lib/firmware/MT7986_ePAeLNA_EEPROM_ONEADIE_DBDC.bin. [ 25.244569] WiFi@C02L1,rtmp_ee_flash_init() 444: The EEPROM in Flash is wrong, use default [ 25.252847] sku:0x7, ADIE=MT7976 [ 25.258892] WiFi@C02L1,is_cal_free_ic() 1009: is_cal_free_ic(1009) offset:0, c,0 [ 25.267090] sku:0x7, ADIE=MT7976 [ 25.285515] WiFi@C02L1,is_cal_free_ic() 1028: iCal free [ 25.291547] sku:0x7, ADIE=MT7976
Here is the item list of the boot menu:
*** U-Boot Boot Menu ***
1. Startup system (Default)
2. Upgrade firmware
3. Upgrade ATF BL2
4. Upgrade ATF FIP
5. Upgrade single image
6. Load image
0. U-Boot console
Press UP/DOWN to move, ENTER to select, ESC/CTRL+C to quit
Here are the possible next steps I have found in my studies: Failsafe mode of the Openwrt, U-boot boot menu, and MTK-Uartboot. I believe there are possible solutions from any of these directions.
Would appreciate any suggestion on the pros and cons of each direction. Any suggested readings for the next action and any precautions that I might need?
Thank you very much for your help.