Since you are the self proclaimed expert, we should all follow these instructions. I do have a question. If we follow this and it fails, will you vouch for the repairs? Just saying because it seems as though you are getting pissy because we are all discussing it.
Not pissy in fact it is you that is acting very immature, you have it stuck in your head that what the dealer/shop told you has to be 100% correct. If you do a search you will see this has been discussed many many times end result you do not need a reflash. If you want one great there is in-fact an updated program that addresses many thing including shifting (also idle and a few other things) many like it.
If you just change out the pack it will shift like it did before as you are replacing like for like, if the computer knew when to tell the solenoid to activate before what makes you thing it wont now?
As for your smart ass remark about me vouching for the repairs I will say that if that what was wrong and you replace it correctly if will work but be there are other things that fail in the tranny. For all I know your servos are bad (also very common).
You can do what you want but if anyone wants to know the answer you do not need a re-flash a simple search in the tranny section will bring up hundreds of threads confirming this.
Fords' instrutions
Solenoid Body Assembly
Removal
1. NOTE: When the battery has been disconnected and reconnected, some abnormal drive symptoms can occur while the vehicle relearns its adaptive strategy. The customer needs to be notified that they may experience slightly different upshifts (either soft or firm) and this is a temporary condition and will eventually return to normal operating condition. Disconnect the battery ground cable.
2. Raise and support the vehicle.
3. Remove the drain plug and drain the fluid.
4. If equipped, remove the converter housing access plug.
5. If equipped, remove the converter drain plug and discard.
6. Remove the shift cable and bracket.
7. NOTE: Clean the area around connector to prevent contamination of the solenoid body connector. Disconnect the solenoid body harness connector.
8. NOTE: The transmission fluid pan gasket is reusable, clean and inspect for damage. If not damaged, the gasket should be reused. Remove the 16 transmission fluid pan screws, fluid pan, and gasket.
9. Remove the transmission fluid filter.
10. Remove the solenoid body.
Installation
1. Install new O-ring seals on the solenoid body connector. Lubricate the O-ring seals with clean automatic transmission fluid.
2. CAUTION: Inspect the transmission case bore to make sure it is free of foreign material and not damaged. If damaged, a transmission leak may occur. Install the solenoid body. Tighten the bolts in sequence shown.
3. CAUTION: Lubricate the fluid filter seals with clean automatic transmission fluid or they may be damaged. NOTE: Make sure that the fluid filter seals are correctly seated on the filter. Lubricate the seals and install the transmission fluid filter.
4. NOTE: The transmission fluid pan gasket is reusable, clean and inspect for damage, if not damaged, the gasket should be reused. Install the transmission fluid pan and gasket and loosely install the screws.
5. Tighten the screws in a crisscross sequence.
6. NOTE: A new converter drain plug must be used to prevent leakage. If removed, install a new converter drain plug.
7. If removed, install the converter housing access plug.
8. CAUTION: Damage will occur to the solenoid body assembly if the screw is tightened above the specification. NOTE: Always install new O-ring seals on vehicle harness connector. NOTE: Clean the area around connector to prevent contamination of the solenoid body connector. NOTE: Use petroleum jelly to lubricate the O-ring seals to aid in the installation process. Install and lubricate new O-ring seals on the transmission connector and connect the connector.
9. Install the shift cable and bracket.
10. Adjust the shift cable.
11. Install the exhaust.
12. Fill the transmission.
13. Lower the vehicle.
14. NOTE: When the battery has been disconnected and reconnected, some abnormal drive symptoms can occur while the vehicle relearns its adaptive strategy. The customer needs to be notified that they may experience slightly different upshifts (either soft or firm) and this is a temporary condition and will eventually return to normal operating condition. Connect the battery ground cable.
Sorry pics did not show up if someone wants them PM me.
I am out.