Here's some info that many of us may find helpful. It's the latest firmware versions and what they do.
readme.txt
2011-10-11
CAR_ESC_readme.txt
2011-10-11
Car ESC Database 111011
The Firmware database of the car ESC has been updated to the latest Version 111008.
1. Two new firmwares named "V3.0_110930_MOD" and "V3.0_110930_STOCK: are available for the following ESC's:
XERUN-120A (V2.0), XERUN-60A (V2.0), XERUN-120A (V2.1), XERUN-60A (V2.1), Xtreme STOCK
a) "V3.0_110930_MOD" is an improved firmware version based on "V3.0_110119_MOD"; the new firmware has been updated to improve the fault tolerance of the signal quality of the Hall sensors within the sensor board of brushless motors.
The old firmware was found to be too sensitive to any small change of the sensor signal, in turn causing the ESC to frequently switch its running mode from sensored to sensorless. The new firmware is not as sensitive, so the ESC can still operate in sensored mode even if the signal has slight changes in amplitude from small error, that might eventuate this will help Mod motors which have very large current flows which cause the signal within the sensor board of the motor to change frequently causing unnecessary errors .
b) "V3.0_110930_STOCK" is a new version based on "V3.0_110211_STOCK", same improvements as above.
2. New firmware named "V3_508_No Timing" is also available for the JUSTOCK ESC. The improvements are as follows:
a) The "Maximum Brake Force" has been increased from 4 options to 8 options for finer adjustment.
b) The new firmware has also been improved for fault tolerance of the signal quality of the Hall sensors within the sensor board of the brushless sensored motor¡¯s.
3. New firmware named ¡°111011_2R¡± is available for the following ESC's:
XERUN-80A, XERUN-150A, XERUN-SCT Pro
a) "111011_2R" firmware improves the fault tolerance of the signal quality of the Hall sensors within the sensor board of brushless motors.
b) The over-heat protection threshold for the ESC is increased to more than 110 Celsius degree, and the over-heat protection function for XERUN-SCT-Pro ESC can be disabled now. (In the old version firmware, the over-heat protection is permanently activated and cannot be disabled by user)