Please create new topic with operation system and version. For me it looks like an error-pointer is used as memory address.
0xf…f98 should be -104 which is “connection reset”
thanks @frank-w . I will do, but first I need to collect some logs 
Just leave a msg for others, if someone have similar issue- my guess is related to mt7925e and recent update for mt76 in OpenWRT (probably it starts since this: mt76: update to Git HEAD (2024-08-16) · openwrt/openwrt@20bf5f3 · GitHub )
EDIT: Issue created: mt7925: Kernel panic after authentication · Issue #909 · openwrt/mt76 · GitHub
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hope experts here can help me with this issue, currently using FM350GL / lastest snapshot , getting good speedtest around 600mbps but when upload starts , R4 will reboot due to kernel panic.
[ 22.894881] mtk_t7xx 0003:01:00.0: Packet drop on channel 0x100a, port not found
[ 27.698024] NOHZ tick-stop error: local softirq work is pending, handler #08!!!
[ 28.856590] NOHZ tick-stop error: local softirq work is pending, handler #08!!!
[ 28.894956] NOHZ tick-stop error: local softirq work is pending, handler #08!!!
[ 28.894962] NOHZ tick-stop error: local softirq work is pending, handler #08!!!
[ 29.267697] NOHZ tick-stop error: local softirq work is pending, handler #08!!!
[ 29.407202] NOHZ tick-stop error: local softirq work is pending, handler #08!!!
[ 29.407208] NOHZ tick-stop error: local softirq work is pending, handler #08!!!
[ 29.493214] NOHZ tick-stop error: local softirq work is pending, handler #08!!!
[ 29.603202] NOHZ tick-stop error: local softirq work is pending, handler #08!!!
[ 29.688209] NOHZ tick-stop error: local softirq work is pending, handler #08!!!
[ 88.920730] wwan wwan0 wwan0: TX queue 0 is full
[ 88.925360] wwan wwan0 wwan0: TX queue 0 is full
[ 88.929969] wwan wwan0 wwan0: TX queue 0 is full
[ 88.934591] wwan wwan0 wwan0: TX queue 0 is full
[ 88.939199] wwan wwan0 wwan0: TX queue 0 is full
[ 88.943824] wwan wwan0 wwan0: TX queue 0 is full
[ 88.948432] wwan wwan0 wwan0: TX queue 0 is full
[ 88.953046] wwan wwan0 wwan0: TX queue 0 is full
[ 88.957654] wwan wwan0 wwan0: TX queue 0 is full
[ 89.990457] wwan wwan0 wwan0: NETDEV WATCHDOG: CPU: 2: transmit queue 0 timed out 1070 ms
[ 91.030488] wwan wwan0 wwan0: NETDEV WATCHDOG: CPU: 2: transmit queue 0 timed out 2110 ms
[ 91.990518] wwan wwan0 wwan0: NETDEV WATCHDOG: CPU: 2: transmit queue 0 timed out 3070 ms
[ 93.030549] wwan wwan0 wwan0: NETDEV WATCHDOG: CPU: 2: transmit queue 0 timed out 4110 ms
[ 93.990577] wwan wwan0 wwan0: NETDEV WATCHDOG: CPU: 2: transmit queue 0 timed out 5070 ms
[ 95.030610] wwan wwan0 wwan0: NETDEV WATCHDOG: CPU: 2: transmit queue 0 timed out 6110 ms
[ 95.990636] wwan wwan0 wwan0: NETDEV WATCHDOG: CPU: 2: transmit queue 0 timed out 7070 ms
[ 97.030666] wwan wwan0 wwan0: NETDEV WATCHDOG: CPU: 2: transmit queue 0 timed out 8110 ms
[ 97.990694] wwan wwan0 wwan0: NETDEV WATCHDOG: CPU: 2: transmit queue 0 timed out 9070 ms
[ 99.030721] wwan wwan0 wwan0: NETDEV WATCHDOG: CPU: 2: transmit queue 0 timed out 10110 ms
[ 99.990750] wwan wwan0 wwan0: NETDEV WATCHDOG: CPU: 2: transmit queue 0 timed out 11070 ms
[ 101.030779] wwan wwan0 wwan0: NETDEV WATCHDOG: CPU: 2: transmit queue 0 timed out 12110 ms
[ 101.990807] wwan wwan0 wwan0: NETDEV WATCHDOG: CPU: 2: transmit queue 0 timed out 13070 ms
[ 102.303752] mtk_t7xx 0003:01:00.0: Could not unmask the UL interrupt. DPMAIF_AO_UL_AP_L2TIMR0 is 0xfffe1
[ 102.313258] wwan wwan0 wwan0: TX queue 0 is full
[ 102.492744] skbuff: skb_under_panic: text:ffffffc08077c45c len:-65269 put:149 head:ffffff80c805b000 data:ffffff7fc806afff tail:0xd3 end:0xec0 dev:wwan0
So, wifi be14 module arrived, mounted it , and after i’ve connected power board is not booting, nothing on serial, straight after power red pwr led and next g led green lights up and thats all… Someone have an idea how to diagnose this dead men?
Did you set SW4 to the “on” position? (to supply 12V to the BE14)
Yes, i did, but now without module board is also dead…
… you “may” have touched/changed the sdcard/emmc/nand boot selector switch while installing the wifi module (happened to me a couple of times).
Yes, but all combination don’t work, no boot blue led, also serial console is silent… Maybe later i’ll have some time to compare to my other one ( have three devices).
What power supply you have? AFAIK for BPI-R4 with BE 14 it is recommended 19V 3.2A:
# from conversation with Wendy
(...)
If you only use BPI-R4 mainboard, 12/2A power is OK. When you add wifi module or other more devices, we advice to use 19V/3.2A or choose power according to actual demand
Dell usb-c 45W brick or 12v 3Amps power supply from other working one. Tommorrow.i’ll take a look on this.