I made a post earlier this year about issues installing OpenWrt on a Netgear R6260. The install from either Netgears Web Gui or NMRP (TFTP) works great. The image gets uploaded successfully and after the original reboot OpenWrt works perfectly. However, if I reboot the system a second time or it loses power in any way it gets stuck in a bootloop. I have tried basically all versions back to 19.07-snapshot. Same result.
I have done a 30-30-30, which always results in borked firmware, even on official netgear firmware.
Here is the NMRP serial log
Here is the 1st boot serial log after NMRP says reboot
Here is the 2nd boot after a successful 1st boot (luci, ssh, everything worked first boot)
Here is the Difference of those two boots
I have no idea why it is doing this, but I did notice at 000F, two bits get swapped and 001F one bit gets flipped. This may be normal.
Anybody out there have a clue?
EDIT:
root@OpenWrt:~# cat /proc/mtd
dev: size erasesize name
mtd0: 00100000 00020000 "u-boot"
mtd1: 00100000 00020000 "SC PART_MAP"
mtd2: 00400000 00020000 "kernel"
mtd3: 02800000 00020000 "ubi"
mtd4: 01800000 00020000 "reserved0"
mtd5: 00200000 00020000 "factory"
mtd6: 03800000 00020000 "reserved1"
root@OpenWrt:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 3840 3840 0 100% /rom
tmpfs 61128 236 60892 0% /tmp
/dev/ubi0_1 28556 44 27016 0% /overlay
overlayfs:/overlay 28556 44 27016 0% /
tmpfs 512 0 512 0% /dev
root@OpenWrt:~# cat /proc/partitions
major minor #blocks name
31 0 1024 mtdblock0
31 1 1024 mtdblock1
31 2 4096 mtdblock2
31 3 40960 mtdblock3
31 4 24576 mtdblock4
31 5 2048 mtdblock5
31 6 57344 mtdblock6
254 0 3844 ubiblock0_0
root@OpenWrt:~# cat /proc/cpuinfo
system type : MediaTek MT7621 ver:1 eco:3
machine : Netgear R6260
processor : 0
cpu model : MIPS 1004Kc V2.15
BogoMIPS : 583.68
wait instruction : yes
microsecond timers : yes
tlb_entries : 32
extra interrupt vector : yes
hardware watchpoint : yes, count: 4, address/irw mask: [0x0ffc, 0x0ffc, 0x0ffb, 0x0ffb]
isa : mips1 mips2 mips32r1 mips32r2
ASEs implemented : mips16 dsp mt
Options implemented : tlb 4kex 4k_cache prefetch mcheck ejtag llsc pindexed_dcache userlocal vint perf_cntr_intr_bit cdmm perf
shadow register sets : 1
kscratch registers : 0
package : 0
core : 0
VPE : 0
VCED exceptions : not available
VCEI exceptions : not available
processor : 1
cpu model : MIPS 1004Kc V2.15
BogoMIPS : 583.68
wait instruction : yes
microsecond timers : yes
tlb_entries : 32
extra interrupt vector : yes
hardware watchpoint : yes, count: 4, address/irw mask: [0x0ffc, 0x0ffc, 0x0ffb, 0x0ffb]
isa : mips1 mips2 mips32r1 mips32r2
ASEs implemented : mips16 dsp mt
Options implemented : tlb 4kex 4k_cache prefetch mcheck ejtag llsc pindexed_dcache userlocal vint perf_cntr_intr_bit cdmm perf
shadow register sets : 1
kscratch registers : 0
package : 0
core : 0
VPE : 1
VCED exceptions : not available
VCEI exceptions : not available
processor : 2
cpu model : MIPS 1004Kc V2.15
BogoMIPS : 583.68
wait instruction : yes
microsecond timers : yes
tlb_entries : 32
extra interrupt vector : yes
hardware watchpoint : yes, count: 4, address/irw mask: [0x0ffc, 0x0ffc, 0x0ffb, 0x0ffb]
isa : mips1 mips2 mips32r1 mips32r2
ASEs implemented : mips16 dsp mt
Options implemented : tlb 4kex 4k_cache prefetch mcheck ejtag llsc pindexed_dcache userlocal vint perf_cntr_intr_bit cdmm perf
shadow register sets : 1
kscratch registers : 0
package : 0
core : 1
VPE : 0
VCED exceptions : not available
VCEI exceptions : not available
processor : 3
cpu model : MIPS 1004Kc V2.15
BogoMIPS : 583.68
wait instruction : yes
microsecond timers : yes
tlb_entries : 32
extra interrupt vector : yes
hardware watchpoint : yes, count: 4, address/irw mask: [0x0ffc, 0x0ffc, 0x0ffb, 0x0ffb]
isa : mips1 mips2 mips32r1 mips32r2
ASEs implemented : mips16 dsp mt
Options implemented : tlb 4kex 4k_cache prefetch mcheck ejtag llsc pindexed_dcache userlocal vint perf_cntr_intr_bit cdmm perf
shadow register sets : 1
kscratch registers : 0
package : 0
core : 1
VPE : 1
VCED exceptions : not available
VCEI exceptions : not available