Thank you for your replies. Turns out the problem was the ground connection, and serial nowworks with pl2303. Unfortunately I mixed up 2 addresses when flashing the new firmware, and erased from 0x9f000000 on instead of 0x9f020000. As a result, my boot loader is corrupt. Now I'm trying some last resort salvage over JTAG, using an rpi with openocd as JTAG dongle. Assuming I manage to compile openocd with ath79 support (which currently fails), can I use the u-boot from pepe2k to restore my uboot ? I yes, how does it work: just copying the bin to flash from 0x9f000000 onwards ?
Many thanks for your help, qwerkus On Thu, Jun 1, 2017 at 11:52 AM, Tom Psyborg <pozega.tomis...@gmail.com> wrote: > you should've flashed https://github.com/pepe2k/u-boot_mod as soon as you > switched from stock to openwrt. uart is not that reliable. i've made similar > mistake while testing TL-MR22U and got brick because of too little RAM. i > had to open device and mess with flash chip. > > On 1 June 2017 at 11:33, Russell Senior <russ...@personaltelco.net> wrote: >> >> >>>>> "QWeRKUS" == QWeRKUS qwErkus <qwer...@gmail.com> writes: >> >> QWeRKUS> Hello, Something went wrong with my last flash of an archer c7 >> QWeRKUS> v2, and now the device refuses to boot. I'm trying to unbrick >> QWeRKUS> it without success since. >> >> QWeRKUS> 2. I tried to get a serial access to the device, unfortunately >> QWeRKUS> all I get is gibberish. Tried 115200 and 9600 baudrates, 8 bit, >> QWeRKUS> no parity, 1 stop bit, no flow control with either CP2102 or >> QWeRKUS> PL2303 usb uart dongles. Also, I can't boot the device with >> QWeRKUS> the ground wire from either uart plugged in. Lights turns on, >> QWeRKUS> and just freeze. >> >> QWeRKUS> Wasted tons of hours on this, and would really be thankful for >> QWeRKUS> any advice/pointers. >> >> Sounds like you are connecting your serial wrong. >> >> >> -- >> Russell Senior, President >> russ...@personaltelco.net >> >> _______________________________________________ >> Lede-dev mailing list >> Lede-dev@lists.infradead.org >> http://lists.infradead.org/mailman/listinfo/lede-dev > > _______________________________________________ Lede-dev mailing list Lede-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/lede-dev