Hi Misha, Your error is mentioned in our documentation: https://flashrom.org/user_docs/misc_notes.html#what-can-i-do-about-dev-mem-errors
You can bookmark our website just in case, have a look if there is other useful info. On Fri, Jan 16, 2026 at 6:28 AM Misha <[email protected]> wrote: > > HI my problem of flashrom > > you flashrom write error - > Enabling flash write... Root Complex Register Block address = 0xfed1c000 > Error accessing ICH RCRB, 0x4000 bytes at 0x00000000fed1c000 > /dev/mem mmap failed: Operation not permitted > FAILED! > FATAL ERROR! > Error: Programmer initialization failed. > > I'm write page internet of my problem in the error > > 1. job for firmware bios of flashrom (modyfication grub) command linux : > # cd /etc/default/ > # sudo nano grub (modyfication GRUB_CMDLINE_LINUX="" of > GRUB_CMDLINE_LINUX="iomem=relaxed") > > fixed grub not decided problem flashrom > > 2. command line output logs of flashrom -p internal > # sudo flashrom -p internal -V > flashrom 1.4.0 on Linux 6.12.48+deb13-amd64 (x86_64) > flashrom is free software, get the source code at https://flashrom.org > > flashrom was built with GCC 14.2.0, little endian > Command line (3 args): flashrom -p internal -V > Initializing internal programmer > /sys/class/mtd/mtd0 does not exist > No coreboot table found. > Using Internal DMI decoder. > DMI string chassis-type: "Notebook" > Laptop detected via DMI. > DMI string system-manufacturer: "LENOVO" > DMI string system-product-name: "" > DMI string system-version: "ThinkPad W541" > DMI string baseboard-manufacturer: "LENOVO" > DMI string baseboard-product-name: "" > DMI string baseboard-version: "SDK0E50510 WIN" > W836xx enter config mode worked or we were already in config mode. W836xx > leave config mode had no effect. > Active config mode, unknown reg 0x20 ID: 00. > Found chipset "Intel QM87" with PCI ID 8086:8c4f. > This chipset is marked as untested. If you are using an up-to-date version > of flashrom *and* were (not) able to successfully update your firmware with > it, > then please email a report to [email protected] including a verbose (-V) > log. > Thank you! > Enabling flash write... Root Complex Register Block address = 0xfed1c000 > Error accessing ICH RCRB, 0x4000 bytes at 0x00000000fed1c000 > /dev/mem mmap failed: Operation not permitted > FAILED! > FATAL ERROR! > Error: Programmer initialization failed. > > > > > _______________________________________________ > flashrom mailing list -- [email protected] > To unsubscribe send an email to [email protected] -- Anastasia. _______________________________________________ flashrom mailing list -- [email protected] To unsubscribe send an email to [email protected]
