diff --git a/docs/BOM.md b/docs/BOM.md
index 2437155..cc6755e 100644
--- a/docs/BOM.md
+++ b/docs/BOM.md
@@ -133,6 +133,7 @@ Header facts (carrier board spec SP-11324-001 v1.3, Table 3-3 and 5-3; raw copy
 - Pin 8 (UART1 TX) is also a boot strap (`BOOT2_STRAP`): nothing should drive it while the board powers up. The WT61's RX is an input,
   so it does not.
 - Pin 7 is `PAC.06` (gpiochip0 line 144), pulled down on the module at power-on.
+- UART1 verified after the WT61 short (2026-10-12): loopback with pin 8 jumpered to pin 10, 1024 bytes intact at 9600 and 115200 baud.
 
 ### Notes