diff --git a/hw/comp/motherboard/asrock.txt b/hw/comp/motherboard/asrock.txt
index ea4c72dd0..246731b09 100644
--- a/hw/comp/motherboard/asrock.txt
+++ b/hw/comp/motherboard/asrock.txt
@@ -19,6 +19,8 @@ ASRock B550M Pro4
     120 usd
     395 bin 244x244
     https://drivers.softpedia.com/downloadTag/B550M%20Pro4
+    https://www.asrock.com/MB/AMD/B550M%20Pro4/index.ru.asp#BIOS
+        3.40 tool -> instant flash
     https://drivers.softpedia.com/downloadTag/B550M%20Pro4%20BIOS%20Update
     https://drivers.softpedia.com/downloadTag/ASRock%20B550M%20Pro4%20BIOS%20Update
     https://drivers.softpedia.com/get/BIOS/Asrock/ASRock-B550M-Pro4-BIOS-2-62.shtml
@@ -26,6 +28,8 @@ ASRock B550M Pro4
     https://www.reddit.com/r/ASRock/comments/rz2i2a/bios_update_ryzen_5_3600_b450m_pro_4/
     https://www.reddit.com/r/ASRock/comments/1bb6mux/ryzen_5700g_not_booting_with_b550m_pro4/
         ! need update
+    https://www.youtube.com/watch?v=jovQnvUwkvI
+    https://forums.overclockers.ru/viewtopic.php?t=588285
 ASRock B550M Steel Legend
     https://www.777555.by/product/328264-asrock-b550m-steel-legend/
     701 bin 244x244
diff --git a/os/linux/README.md b/os/linux/README.md
index 8d666fce3..47fdb81ab 100644
--- a/os/linux/README.md
+++ b/os/linux/README.md
@@ -436,15 +436,3 @@ journalctl -k -b-1 > journal.txt
 * https://forum.puppylinux.com/viewtopic.php?t=2010
 * https://losst.pro/ispravlyaem-chernyj-ekran-ubuntu
 * https://wiki.astralinux.ru/pages/viewpage.action?pageId=23199819
-
-## bios
-
-P2.90
-
-* https://www.asrock.com/mb/AMD/B550M%20Pro4/index.ru.asp
-* https://www.asrock.com/MB/AMD/B550M%20Pro4/index.ru.asp#BIOS
-* https://www.youtube.com/watch?v=jovQnvUwkvI
-* https://forums.overclockers.ru/viewtopic.php?t=588285
-
-* https://www.asrock.com/support/BIOSIG.ru.asp?cat=BIOS8
-tool -> instant flash